Patent information:

Patent:Utility 446,130
Patented:February 10, 1891
Applied:October 15, 1890
Title:Lightning Rod
Description:Lightning rod made of sheet copper angularly bent and twisted into a spiral with corrugations between the angles
Category:Lightning Rod
Assigned to: 

Patentee Information:

DOWNEY, George W. Hyattsville, MD

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:133RCONDUITS, CABLES OR CONDUCTORS Conductor structure (nonsuperconductive) Noncircular strand section;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:3LIGHTNING PROTECTION Rods;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1