IP Library Granted Patent US 6,674,687
Granted Patent Utility
US 6,674,687 · Confirmation No. 4352

SYSTEM AND METHOD FOR NAVIGATION USING TWO-WAY ULTRASONIC POSITIONING

Inventor: Michael A. Zeitzew
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Code Description Pages PDF
2008-09-02 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2005-12-14 C.AD Change of Address 1 View
2003-10-29 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-01-25 TRNA Transmittal of New Application 2 View
2002-01-25 SPEC Specification 30 View
2002-01-25 CLM Claims 5 View
2002-01-25 ABST Abstract 1 View
2002-01-25 DRW Drawings-only black and white line drawings 13 View
2002-01-25 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,674,687
App. No.
10/057,662
Filed
2002-01-25
Granted
2004-01-06
Pub. No.
US20030142587A1
Art Unit
3662
PTA
-30 days