Pocket Watch Database

Patent Archive
#971500

Patent Information

Watch Movement Ratchet Mech

Howard Metzler Groff

September 27, 1910

Patent #971500
Manufacturer:E Howard Watch Co (Keystone)
Patent Number:971500
Description:Watch Movement Ratchet Mech
Inventor(s): Howard Metzler Groff
Assignee:Keystone Watch Case Co
Patent Date:Sep 27, 1910
Registration Type:Patent
External Research:https://www.google.c…
Patent Document:  PDF