The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1992
Filed:
Sep. 26, 1990
Applicant:
Inventor:
David D Casey, Overland Park, KS (US);
Assignee:
Garmin Corporation, Lenexa, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
328155 ; 328 55 ; 328 72 ; 307511 ;
Abstract
A precision phase shift system presents advantageous utility in navigation systems using signals from global positioning satellites. In particular, the system hereof provides precise control over successive phase-shifting steps of output signals which allows precise matching with corresponding object signals for subsequent decoding thereof.