Membership
Tour
Register
Log in
Godefridus Heijnen
Follow
Person
Eindhoven, NL
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Filter for colored electric lamp
Patent number
5,017,825
Issue date
May 21, 1991
U.S. Philips Corporation
Godefridus H. C. Heijnen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electric lamp having a metal foil with a convexly and concavely cur...
Patent number
4,851,733
Issue date
Jul 25, 1989
U.S. Philips Corporation
Gijsbert H. C. Kuus
H01 - BASIC ELECTRIC ELEMENTS