IP Library › Granted Patent US 4,761,821
Granted Patent Utility
US 4,761,821 · App. 06/885,783

Radio frequency signal transmission system with carrier frequencies at opposite edges of the channel

Inventors: Daniel D. Mawhinney, Robert E. Askew
Patented Case View Patent ↗
Granted: Aug 2, 1988 Filed: Jul 15, 1986
Inventors
Daniel D. Mawhinney
Robert E. Askew
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 4,761,821
App. No.
06/885,783
Filed
1986-07-15
Granted
1988-08-02
Kind
A