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:
Year between: and
Patentee starting with:
Assigned To starting with:
Description containing:
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 = '174') AND (category.subclass = '131R') ORDER BY date ASC, patent, type

Total of 5 patents found where: Class is '174'; Subclass is '131R';

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
U 120,457 October 31, 1871 Improvement in Lightning Conductors
Lightning rod conductor made of wires twisted together and wrapped and twisted around a metal tube (see reissue 7,063)
PRESTON, Othniel
Lightning Rod  
U 243,630 June 28, 1881 Lightning Rod
Lightning rod composed of a zinc tube covered with copper surrounded by twisted spiraling tubes of the same combination
Lightning Rod 4/5 to H. D. Morse and N. C. Gault
U 364,605 June 7, 1887 Lightning Rod
Lightning rod composed of a hollow core wrapped with small hollow wire which has been wrapped with soft wire and the whole encsed in a copper covering
Lightning Rod 2/3 to Henderson D. Morse and Nathaniel C. Gault
U 965,207 July 26, 1910 Electric Cable Lightning Rod
Conductor cable made from straight wires
MAST, Louis L.
Lightning Rod  
U 1,153,617 September 14, 1915 Lightning Rod
Lightning rod made of flat metal coiled helically to form a hollow tube and then wires spiralled around the outside
GOETZ, Julius F.
Lightning Rod  

Total of 0.01 seconds