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:
Feb. 21, 1978
Filed:
Jun. 20, 1975
Applicant:
Inventor:
Norman E Flournoy, Richmond, VA (US);
Assignee:
Texaco Inc., New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
340 15 ; 73 4 / ;
Abstract
An acoustic type of pipeline marker that has combined with it, as a unitary structure, an acoustic signal detector for determining whether the marker is operating. The detector is only energized when it is desired to check whether the marker is emitting the desired acoustic signals into the pipeline. The detector provides a visual signal.