Membership
Tour
Register
Log in
Horst Schaefer
Follow
Person
Friedrichsdorf, DE
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Time-keeping device, especially a quartz-controlled clock
Patent number
4,417,820
Issue date
Nov 29, 1983
Braun Aktiengesellschaft
Peter Busch
G04 - HOROLOGY