IP Library › Granted Patent US 5,140,613
Granted Patent Utility
US 5,140,613 · App. 07/529,035

Baseband modulation system with improved ROM-based digital filter

Inventors: Raymond A. Birgenheier, David Mahlon Hoover
Patented Case View Patent ↗
Granted: Aug 18, 1992 Filed: May 25, 1990
Inventors
Raymond A. Birgenheier
David Mahlon Hoover
Assignee (at issue)
Hewlett-Packard Company, L.P.

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 5,140,613
App. No.
07/529,035
Filed
1990-05-25
Granted
1992-08-18
Kind
A