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 WHERE (assigned_to = 'Trenton Porcelain Co.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Assigned To is 'Trenton Porcelain Co.';

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
 1915
U Specimen known 1,147,498 July 20, 1915 Divided Insulator
Reversible nail-knob		 FREEMAN, Edgar H.
 Knob Trenton Porcelain Co.

Total of 0.00 seconds