Membership
Tour
Register
Log in
by Theodora Johanna Van Amersfoort legal representative
Follow
Person
Pasadena, CA, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Long period pendulum apparatus
Patent number
5,822,277
Issue date
Oct 13, 1998
Jan Van Amersfoort
G04 - HOROLOGY