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 = '15') ORDER BY date ASC, patent, type

Total of 17 patents found where: Class is '15';

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
 1865
U 50,398 October 10, 1865 Lightning Rod Joints
Lightning rods joined with slip joints		 SMITH, N. E.
 Lightning Rod Coupling  
 1867
U Specimen known 64,654 May 14, 1867 Improvement in Insulators
CD 732.2, threadless insulator with enlarged chamber for slotted pin (CJ 6-93-12)		 FLOYD, George
 Insulator  
 1869
U 90,578 May 25, 1869 Improvement in Lightning Rod Couplings
Coupling for lightning rods where the ends can be screwed together (see reissue 8,304)		 REYBURN, William S.
HUNTER, Edmund A. W.
 Lightning Rod Coupling  
 1871
U 113,869 April 18, 1871 Improvement in Lightning Rods
Coupling for tubular lightning rods made of a lap or scarf joint		 GAYLORD, Albert A.
 Lightning Rod Coupling  
 1873
U 139,841 June 10, 1873 Improvement in Coupling Tubular Lightning Rods
Means of coupling tubular lightning rods		 WESTON, James H.
 Lightning Rod  
U 145,641 December 16, 1873 Improvement in Couplings for Tubular Lightning Rods
Means of coupling tubular lightning rods		 FRITSCH, Joseph W.
 Lightning Rod  
 1875
U 170,377 November 23, 1875 Improvement in Lightning Rods
Coupling for hollow lightning rods composed of a hollow indented plug that fits into indentions in the rod ends		 JOHNSON, Isaac
 Lightning Rod Coupling  
 1876
U 173,962 February 22, 1876 Improvement in Couplings for Tubing and Lightning Rods
Coupling made of a short hollow piece placed inside both ends of the rod and crimped down through the rod ends to secure the sections		 JOHNSON, Isaac
 Lightning Rod Coupling Reyburn, Hunter & Co.
 1882
U 266,075 October 17, 1882 Lightning Rod Joint or Coupling
Internal coupling for hollow lightning rods that can be pinned to the rod		 BALL, Charles E.
 Lightning Rod Coupling  
 1883
D 13,996 June 19, 1883 Design for an Inkstand
Inkstand		 GRAY, Lawrence B.
 Ink  
 1884
U 303,488 August 12, 1884 Coupling for Tubular Lightning Rods
Coupling for tubular lightning rods		 BRADLEY, Sylvester
 Lightning Rod Coupling  
U 305,140 September 16, 1884 Lightning Rod Coupling
Coupling for tubular lightning rods		 BRADLEY, Sylvester
 Lightning Rod Coupling  
 1889
U 400,464 April 2, 1889 Lightning Rod and Coupling
Coupling burr with serrated ends that interlock with the rod sections		 LAWSHE, Spencer R.
 Lightning Rod Coupling  
 1894
U 518,793 April 24, 1894 Lightning Rod and Coupling
Couple with internal threads to screw sections together		 SMITH, John W.
 Lightning Rod Coupling  
 1914
U 1,122,326 December 29, 1914 High Potential Insulator
Multipart insulator made of Electrose		 STEINBERGER, Louis
 Multipart  
 1933
U 1,904,608 April 18, 1933 Insulator Finishing Brushing Machine
Machine to grind down interlinking passages in a semi-dry insulator body for metal fittings		 BETTINI, David
 Manufacturing Locke Insulator Corp.
 1959
U 2,898,658 August 11, 1959 Manufacture and Apparatus for the Manufacture of Ceramic Ware
Method of removing water through conduits in the mold when plastic clay is pressed in a mold.		 HARRY, William R.
 Mold McGraw-Edison Co.

Total of 0.00 seconds