Membership
Tour
Register
Log in
Jan H. Matthias
Follow
Person
Greispinzgau, AT
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Eyeglasses having removable lenses
Patent number
4,176,921
Issue date
Dec 4, 1979
Carrera International Corporation
Jan H. Matthias
G02 - OPTICS