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 = '501') AND (category.subclass = '77') ORDER BY last_name ASC, first_name, date, patent, type

Total of 3 patents found where: Class is '501'; Subclass is '77';

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
 LOCKE, Fred M.
U Specimen known 1,156,163 October 12, 1915 Manufacture of High Potential Electric Conductors
Boro-silicate glass & porcelain		 LOCKE, Fred M.
 Boron  
 LOCKE, Fred M.
LOCKE, Fred J.
U 1,529,259 March 10, 1925 Glass
Alumino-silicate glass (Corning's Flameware)		 LOCKE, Fred M.
LOCKE, Fred J.
 Alumino  
U 1,886,280 November 1, 1932 Ultra Violet Ray Transmitting Glass and to a Batch and Method for Making the Same
Boro-silicate glass, method to make glass to transmit UV light		 LOCKE, Fred M.
LOCKE, Fred J.
 Boron Corning Glass Works

Total of 0.00 seconds