IP Library › Granted Patent US 4,158,200
Granted Patent Utility
US 4,158,200 · App. 05/836,746

Digital video display system with a plurality of gray-scale levels

Inventors: Charles L. Seitz, Paul Grunewald, Marshall M. Parker, Irvin G. Stafford
Patented Case View Patent ↗
Granted: Jun 12, 1979 Filed: Sep 26, 1977
Inventors
Charles L. Seitz
Paul Grunewald
Marshall M. Parker
Irvin G. Stafford
Assignee (at issue)
Burroughs, Inc.

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,158,200
App. No.
05/836,746
Filed
1977-09-26
Granted
1979-06-12
Kind
A