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 = 'Guthrie-Mitchell Co.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Assigned To is 'Guthrie-Mitchell 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
 1912
U 1,022,026 April 2, 1912 Insulator
Block in crossarm		 GUTHRIE, Joseph A.
 Block Guthrie-Mitchell Co.

Total of 0.00 seconds