IP Library Granted Patent US 5,945,639
Granted Patent Utility
US 5,945,639 · App. 08/192,078

Cancellation of common-mode signals in digitizing tablet

Inventors: Tony S. Partow, William K. Petty
Patented Case View Patent ↗
Granted: Aug 31, 1999 Filed: Feb 4, 1994
Inventors
Tony S. Partow
William K. Petty
Assignee (at issue)
Hyundai Electronics America

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 5,945,639
App. No.
08/192,078
Filed
1994-02-04
Granted
1999-08-31
Kind
A