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 = '403') AND (category.subclass = '377') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '403'; Subclass is '377';

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
 1910
U 974,177 November 1, 1910 Insulator for High Tension transmission systems
Suspension insulator with yieldable slugs to distribute strain pressure		 NOEGGERATH, Jakob E.
 Suspension General Electric Co.
 1931
U 1,819,380 August 18, 1931 Insulator Connection
Suspension insulator cap and pin that can be locked in securely		 OSBORNE, David H.
 Suspension Locke Insulator Corp.

Total of 0.00 seconds