IP Library › Granted Patent US 5,983,159
Granted Patent Utility
US 5,983,159 · App. 08/940,709

Location determination using signals from fewer than four satellites

Inventor: John F. Schipper
Patented Case View Patent ↗
Granted: Nov 9, 1999 Filed: Sep 30, 1997
Inventor
John F. Schipper
Assignee (at issue)
Trimble Navigation Limited

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 5,983,159
App. No.
08/940,709
Filed
1997-09-30
Granted
1999-11-09
Kind
A