IP Library Granted Patent US 4,704,725
Granted Patent Utility
US 4,704,725 · App. 06/829,531

Signal processing apparatus and methods

Inventors: John Christopher Harvey, James W. Cuddihy
Patented Case View Patent ↗
Granted: Nov 3, 1987 Filed: Feb 14, 1986
Inventors
John Christopher Harvey
James W. Cuddihy

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 4,704,725
App. No.
06/829,531
Filed
1986-02-14
Granted
1987-11-03
Kind
A