Granted Patent
Utility
US 4,542,425 · App. 06/452,566
Apparatus for reading a record carrier
Inventor:
Edmond de Niet
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Dec 23, 1982
Inventor
Edmond de Niet
Assignee (at issue)
U.S. Philips Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.