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 = '65') AND (category.subclass = '293') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '65'; Subclass is '293';

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
 1855
U 13,402 August 7, 1855 Forming Screw Threads, etc., in the Necks of Glass Bottles and Similar Articles
Threads formed internally in necks of bottles and insulators
STONE, Amasa
Thread  
 1897
U 596,319 December 28, 1897 Manufacture of Necks of Glass Bottles
Method of forming necks on glass bottles.
BROOKE, Homer
Mold  

Total of 0.00 seconds