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 (category = 'Engraving') ORDER BY date ASC, patent, type

Total of 1 patents found where: Category is 'Engraving';

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
 1870
U 108,408 October 18, 1870 Improvement in Cutting and Engraving Stone, Metal, Glass &c.
Method of sandblashing to cut or engrave		 TILGHMAN, Benjamin C.
 Engraving  

Total of 0.00 seconds