Patent information:

Patent:Utility 913,212
Patented:February 23, 1909
Applied:September 14, 1908
Title:Insulator Mold
Description:Plunger for press formed segmented threads in pinhole
Category:Plunger
Assigned to:9/20 to John Watson

Patentee Information:

JOHNSON, Chauncey C. Scranton, PA

Class and subclass information:

Class:65GLASS MANUFACTURING
Subclass:362PLUNGER;

Known specimens:

Number:Specimen known

Drawings:

Drawing page 1

Page 1

Drawing page 2

Page 2