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 = '57') AND (category.subclass = '14') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '57'; Subclass is '14';

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
 1899
U 630,334 August 8, 1899 Machine for Making Lightning Rods
Machine for making lightning rods that are easily bent to aid in installation
DODD, West
Lightning Rod Machine  
 1908
U 887,277 May 12, 1908 Machine for Making Cable Lightning Rods
Machine for making cable conductors that is a cable within a cable for greatest flexibility and conduction
SHINN, William C.
Lightning Rod Machine  

Total of 0.00 seconds