Pocket Watch Database

Patent Archive
#2158725

Patent Information

Apparatus And Method Test Hair Spring And Like

Robert R. Lawson
Frank D. Urie

June 16, 1939

Patent #2158725
Manufacturer:Elgin
Patent Number:2158725
Description:Apparatus And Method Test Hair Spring And Like
Inventor(s): Robert R. Lawson
Frank D. Urie
Assignee:Elgin Natl Watch Co
Patent Date:Jun 16, 1939
Registration Type:Patent
External Research:https://www.google.c…
Patent Document:  PDF