IP Library › Granted Patent US 4,255,504
Granted Patent Utility
US 4,255,504 · App. 06/060,030

Method for producing CRT screen structure

Inventor: David F. Hakala
Patented Case View Patent ↗
Granted: Mar 10, 1981 Filed: Jul 23, 1979
Inventor
David F. Hakala
Assignee (at issue)
RCA 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.

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 4,255,504
App. No.
06/060,030
Filed
1979-07-23
Granted
1981-03-10
Kind
A