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:
Jul. 10, 1984
Filed:
Dec. 28, 1981
Applicant:
Inventor:
Conrad H Biber, Needham, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
367107 ; 367 93 ; 367112 ; 367 96 ;
Abstract
Apparatus utilizing a combination energy transmitting and energy receiving transducer or a transducer set consisting of separate energy transmitting and energy receiving transducers, are employed to detect and subsequently indicate the presence of an object(s) within one or more of a plurality of spaced-apart spacial zones.