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 = '193') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '193';

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
 1887
U 369,429 September 6, 1887 Bridge Brow for Ferry Boats & c.
Method of moving bridge bows or gang planks on boats		 BROOKE, Homer
 Misc 1/2 to John Hurtin King
 1939
U 2,150,995 March 21, 1939 Wire Bracket
Wireholder bracket with lag screw that allows bracket and insulator movement.		 TALLMAN, Oscar F.
 Bracket/wireholder James R. Kearney Corp.

Total of 0.00 seconds