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 = 'Pug Mill') ORDER BY specimen ASC, date, patent, type

Total of 2 patents found where: Category is 'Pug Mill';

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
 1892
U 473,497 April 26, 1892 Pug Mill
Pug mill for extruding clay
CROSSLEY, Joseph
Pug Mill  
 1942
U 2,297,646 September 29, 1942 Pug Mill
Pug mill design to prevent stresses and strains in the clay as it is extruded
BELLEZZA, Russell G.
SKIPPER, Edward M.
Pug Mill Locke Insulator Corp.

Total of 0.00 seconds