Search the Insulator Patent Reference Library:

Build your search criteria. The patent must match all the values specified.
Select patent types: Utility   Design   Reissue
Patent number:
Date:
Year between: and
Patentee starting with:
City:
State:
Assigned To starting with:
Description containing:
Category:
Class:    Subclass:
Click Search when complete:
SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '249') ORDER BY category DESC, date, patent, type

Total of 28 patents found where: Class is '249';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S Patent Date Description Patentee Category Assigned To
 Suspension
U 1,754,101 April 8, 1930 Insulator and Mold for Casting the Same
Hewlett style insulator made by casting
HAQUIN, Henri Louis Joseph
Suspension  
 Press
U 596,652 January 4, 1898 Press for Making Insulators
Press for making insulators
BROOKFIELD, Henry M.
KRIBS, Seraphin
Press William Brookfield
U 771,483 October 4, 1904 Glass Mold
Glass press that can be adapted for insulator manufacture
MYERS, McClelland
Press 1/2 to John P. Elkins
U 1,144,527 June 29, 1915 Mold
Press for making glass insulators
BROOKFIELD, Henry M.
OLSEN, Sigward
Press Brookfield Glass Co.
U 1,779,811 October 28, 1930 Method of Manufacturing Insulators
Press for making skirts/petticoats in one-piece porcelain (replaces casting)
HARVEY, William F.
Press  
 Plunger
U Specimen known 132,214 October 15, 1872 Improvement in Formers for Segmentally Screw Threaded Insulators
Plunger to form segmented threads
OAKMAN, Samuel
Plunger  
U Specimen known 132,215 October 15, 1872 Improvement in Formers for Segmentally Screw Threaded Insulators
Plunger to form segmented threads
OAKMAN, Samuel
Plunger  
 OI
U 3,122,861 March 3, 1964 Field Replacement Block in Masonry Walls and Panels
Field Replacement of Glass Blocks
IDEN, Charles H.
OI Owens-Illinois Glass Co.
U 3,155,479 November 3, 1964 Centrifugal Molds and Method of Forming Hollow Articles
Glass TV Tube Molds
ZIMMERMAN, George
OI Owens-Illinois Glass Co.
 Mold
U 85,637 January 5, 1869 Improved Glass Mould
Mold for making glass bottles
BROOKE, Homer
Mold  
U 164,517 June 15, 1875 Improvement in Molds for Glass, Etc.
Mold for making glass insulators
BROOKE, Aries P.
Mold James M. Brookfield
U 191,102 May 22, 1877 Improvement for Glass Molds for Shade-Holders and Shades
Mold for lamp shades
BROOKE, Homer
Mold Bennett B. Schneider
U 191,103 May 22, 1877 Improvement in Molds for Glass Shades, &c.
Mold for lamp shades
BROOKE, Homer
Mold Bennett B. Schneider
U 364,211 June 7, 1887 Glass Mold
Glass mold for bottles with an end-tapper.
BROOKE, Homer
Mold  
U 801,461 October 10, 1905 Mold for Forming Insulators
Mold with hinge for forming ""Combination Safety"" CD 139 (attorney H. P. Denison)
KRIBS, Anthony
Mold R. V. Lamberson
U 820,404 May 15, 1906 Bottle Mold
Bottle mold
DUFFIELD, Thomas C.
Mold  
U 899,871 September 29, 1908 Mantle Ring Mold
A mold for making mantle rings.
KENNEY, Benjamin D.
Mold The R. Thomas & Sons Co.
U Specimen known 952,279 March 15, 1910 Mold in Which to Form Plastic Articles
Mold to form a slotted-top, twist-lock, self-tying glass insulator (see 707,429) (see design 35,462)
ROBERTS, Linas P.
Mold 1/3 to Hayes McGibbeny
U 1,304,571 May 27, 1919 Mold for Forming Insulators or Other Porcelain Objects
Mold for bushing with undercut petticoats formed by the casting process by pouring in clay slip
KIRK, Charles J.
BRAIN, GEORGE
Mold  
 Manufacturing
U 1,449,808 March 27, 1923 Mold
Machine press to form the glass lid to a dish and the handle knob on top
BOALS, Harry R.
Manufacturing Corning Glass Works
U 1,679,345 August 7, 1928 Method and Apparatus for Casting Ceramic Pieces
Manufacturing method of casting bushings with a hollow core
AUSTIN, Arthur O.
Manufacturing The Ohio Brass Co.
U 1,733,729 October 29, 1929 Method of Casting Link-Type Insulators
Manufacturing method to cast Hewlett type suspension disks
GOUVERNEUR, Minor F. H.
STEVENS, Frank J.
Manufacturing Locke Insulator Corp.
U 2,201,049 May 14, 1940 Glass Fabrication Process and Mold
Glass bushing making process
MOORE, Roy W.
Manufacturing General Electric Co.
 Jars
U 270,162 January 2, 1883 Mold for Forming Glass Screw Caps
Mold for making glass screw caps for jars. Patent was used by the Cadiz Glass Co.
WALLACE, William M.
Jars Charles M. Rhodes
 Jar
U 30,063 September 18, 1860 Mold for Glass Jars
Mold to form annular groove around opening of fruit jar to receive cap and sealing wax
HEMINGRAY, Robert
Jar  
 HU
U 443,403 December 23, 1890 Revolving Mold for Glassware
Mold for glassware (for making seamless glass)
NEVILLE, Asa G.
HU  
 Hook
U 11,515 August 15, 1854 Glass Mold
Mold and press to manufacture Lefferts ramshorn insulator
BROOKE, William
Hook  
 Die
U 648,341 April 24, 1900 Die for Pottery Ware
Die for pressing out door knobs
BOCH, John W.
Die  

Total of 0.03 seconds