IP Library › Granted Patent US 5,448,258
Granted Patent Utility
US 5,448,258 · App. 08/141,147

Active matrix display devices

Inventor: Martin John Edwards
Patented Case View Patent ↗
Granted: Sep 5, 1995 Filed: Oct 21, 1993
Inventor
Martin John Edwards
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.

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Quick Facts
Patent No.
US 5,448,258
App. No.
08/141,147
Filed
1993-10-21
Granted
1995-09-05
Kind
A