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 = '470') ORDER BY date ASC, patent, type

Total of 13 patents found where: Class is '470';

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
 1872
U 125,980 April 23, 1872 Improvement in Screw Cutting Device
Insulator pin threading device		 NORTH, Stephen
 Pin  
 1875
U 161,912 April 13, 1875 Improvement in Modes of Forming Sheet Metal Threaded Collars
Oil lamp collar		 TAPLIN, Alvin
 HU  
 1910
U 954,490 April 12, 1910 Machine for Threading Porcelain Insulators
Machine to form threads in wet process porcelain		 YOUNG, George F.
 Thread Pittsburg High Voltage Insulator Co.
 1919
U 1,314,682 September 2, 1919 Spur Forming Machine
Machine for making nail-knobs (see 1,517,084)		 MCKNIGHT, Oscar W.
 Knob Brunt Tile & Porcelain Co.
 1924
U 1,486,664 March 11, 1924 Assembling Machine for Insulator Knobs
Machine to assemble nail-knobs		 HIRES, John Edgar
 Knob Automatic Machinery and Equipment Co., Inc.
U 1,517,084 November 25, 1924 Spur Forming Machine
Machine for making nail-knobs (see 1,314,682)		 MCKNIGHT, Oscar W.
 Knob Brunt Tile & Porcelain Co.
 1925
U 1,532,110 March 31, 1925 Apparatus for Assembling Nail Knobs
Machine for assembling nail-knobs		 LOY, John G.
 Knob Federal Porcelain Co.
U 1,532,111 March 31, 1925 Machine for Assembling Nail Knobs
Machine for assembling nail-knobs		 LOY, John G.
 Knob Federal Porcelain Co.
U 1,538,238 May 19, 1925 Machine for Assembling Insulator Knobs
Machine for assembling nail-knobs, inserting the nail and crimping it so the nail cannot be removed, thus holding the parts together.		 CARPENTER, Alexander
 Manufacturing C. A. C. Automatic Machine Co.
U 1,567,027 December 29, 1925 Insulator Threading Machine
Machine to form threads in plastic clay		 BENNETT, Cornelius Van Dyke
 Press The Porcelain Insulator Corp.
 1926
U 1,583,458 May 4, 1926 Nail Knob Assembling Machine
Machine for making nail-knobs		 HANLEY, Timothy Henry
 Knob Federal Porcelain Co.
U 1,589,939 June 22, 1926 Nail Knob Assembly
Machine to manufacture nail-knobs		 CASE, Francis M.
 Knob Federal Porcelain Co.
U 1,589,940 June 22, 1926 Nail Knob Assembling and Securing Machine
Machine to manufacture nail-knobs		 CASE, Francis M.
 Knob Federal Porcelain Co.

Total of 0.01 seconds