Patent information:

Patent:Utility 937,736
Patented:October 19, 1909
Applied:November 21, 1908
Title:Insulator
Description:Pin with spring to fit into threads
Category:Pin
Assigned to: 

Patentee Information:

DUMBOLTON, Perry S. Burke, ID
FRANZ, Frank Burke, ID

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:203INSULATORS With terminal elements Pin type Screw or bayonet type Strand thread;
Class:138PIPES AND TUBULAR CONDUITS
Subclass:96T 

Known specimens:

None known

Drawings:

Drawing page 1

Page 1