Patent information:

Patent:Utility 328,728
Patented:October 20, 1885
Applied:July 26, 1884
Title:Insulator
Description:Slotted tubular insulator for crossovers
Category:Slotted
Assigned to: 

Patentee Information:

SMITH, Leonard O. Philadelphia, PA

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:147INSULATORS Mid-line spacers Cross-over;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:175INSULATORS With conductor holding means Insulator structure Self-retaining;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1