Pocket Watch Database

Patent Archive
#2291455

Patent Information

Method Of Make Balance Wheel

Arthur P. Emmert
Pierre Dumaine

July 28, 1942

Patent #2291455
Manufacturer:Waltham
Patent Number:2291455
Description:Method Of Make Balance Wheel
Inventor(s): Arthur P. Emmert
Pierre Dumaine
Assignee:Waltham Watch Co
Patent Date:Jul 28, 1942
Registration Type:Patent
External Research:https://www.google.c…
Patent Document:  PDF