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 = '337') AND (category.subclass = '194') ORDER BY specimen ASC, date, patent, type

Total of 2 patents found where: Class is '337'; Subclass is '194';

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
 1923
U 1,463,852 August 7, 1923 Electric Line Insulator
Insulator with fuse inserted between the petticoats and a plug to hold it in place
STEPHENS, Benjamin George Claude
Fuse Holder  
 1905
U Specimen known 794,435 July 11, 1905 Thermal Cut-Out
Fuse holder (Westinghouse -- see photo)
VARNEY, Theodore
Fuse Holder Westinghouse Elec. & Mfg. Co.

Total of 0.01 seconds