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:
Nov. 15, 1983
Filed:
May. 21, 1981
Applicant:
Inventor:
Ronald W Mongeon, San Jose, CA (US);
Assignee:
Stellar Systems, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340552 ; 340553 ;
Abstract
An intrusion detector is provided having transmission and receiving cables wherein the cables are leaky from an RF standpoint so that a portion of the RF energy from the transmission cable escapes and is picked up on the receiving cable. Both sine and cosine signals are detected. The cables can be buried.