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 = '52') AND (category.subclass = '726.1') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '52'; Subclass is '726.1';

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
 1876
U 173,963 February 22, 1876 Improvement in Lightning Rods
Lightning rod with solid supporting rod fitted inside and screwed into the rod coupling on each end
JOHNSON, Isaac
PRICE, David A.
Lightning Rod Reyburn, Hunter & Co.
 1912
U 1,047,176 December 17, 1912 Cross Arm
Crossarm stamped out of sheet metal and easy to install
CRABTREE, Lawrence L.
RIPLEY, T. Charley
Crossarm  

Total of 0.00 seconds