Patent information:

Patent:Utility 840,336
Patented:December 25, 1906
Applied:February 7, 1906
Title:Insulator
Description:Knob
Category:Knob
Assigned to: 

Patentee Information:

JOHNSON, Alfred Quincy, IL

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:156INSULATORS Divided insulator;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:166RINSULATORS With insulator-supporting or attaching means Support penetrating Through aperture, penetrating element clamped;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1