Patent information:

Patent:Utility 992,570
Patented:May 16, 1911
Applied:July 1, 1910
Title:Insulator
Description:Knob with reversible L-shaped halves to better grip the wire and without projections that might get damaged during shipment.
Category:Knob
Assigned to: 

Patentee Information:

MARKEL, Harley R. Columbus, OH

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:157INSULATORS Divided insulator Aligned through aperture;

Known specimens:

Number:Specimen known

Drawings:

Drawing page 1

Page 1