5 Utility Patents
#37 in Celle
#52,350 in Germany
#826,892 in the World
Forward Citations = 285
Company Filing History:

Philips & Du Pont Optical Company
Polygram International Holding B.v.
4. 1 out of 3
Du Pont Optical Company
5. 1 out of 17
Polygram Gmbh
where one patent can have more than one assignee
Get your Inventor Badge Today