IP Library › Granted Patent US 4,318,051
Granted Patent Utility
US 4,318,051 · App. 06/107,401

Symmetrically gain controlled differential amplifier

Inventors: Leopold A. Harwood, Erwin J. Wittmann
Patented Case View Patent ↗
Granted: Mar 2, 1982 Filed: Jan 15, 1980
Inventors
Leopold A. Harwood
Erwin J. Wittmann
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 4,318,051
App. No.
06/107,401
Filed
1980-01-15
Granted
1982-03-02
Kind
A