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 name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '403') AND (category.subclass = '210') ORDER BY last_name ASC, first_name, date, patent, type

Total of 3 patents found where: Class is '403'; Subclass is '210';

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
 ALSBERG, Julius
U 1,006,040 October 17, 1911 Insulator
Suspension using multiple parts connected with a cable
ALSBERG, Julius
Suspension  
 FITZPATRICK, Paul G.
U Specimen known 1,621,530 March 22, 1927 Dead-Ending Clamp
Dead ending clamp for long span crossings
FITZPATRICK, Paul G.
Hardware American Telegraph & Telephone Co.
 FLETCHER, Olive L.
U 1,028,104 June 4, 1912 Strain Insulator
Strain type
FLETCHER, Olive L.
Strain The Peru Electric Mfg. Co.

Total of 0.00 seconds