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:
Jan. 31, 1978
Filed:
Mar. 31, 1975
Applicant:
Inventor:
Fritz A Gross, Weston, MA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
3431 / ; 325 64 ; 325116 ;
Abstract
A radio beacon navigation system wherein buoys placed at predetermined locations in a harbor or channel transmit identification signals. Every buoy is assigned a unique carrier frequency upon which is transmitted a signal capable of identifying the buoy. Each buoy is shown on harbor charts according to the unique properties of its signal. Radio receiving means carried aboard vessels navigating through the harbor or channel include means for determining the identity of the buoy from which signals are received and the direction from which the received signals emanate.