Patent information:

Patent:Utility 304,748
Patented:September 9, 1884
Applied:May 31, 1884
Title:Mold for Making Glass Insulators
Description:Threads formed with hinged thread forming tool
Category:Thread
Assigned to: 

Patentee Information:

OAKMAN, Samuel Melrose, MA

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