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. 12, 1996
Filed:
Jan. 12, 1995
Applicant:
Inventors:
Donald W Church, Halifax, CA;
Ove K Gashus, Halifax, CA;
Assignee:
J. J. Mackay Canada Limited, , CA;
Primary Examiner:
Int. Cl.
CPC ...
G07D / ;
U.S. Cl.
CPC ...
194317 ;
Abstract
A method for identifying metallic coins and tokens, comprising: applying an input signal to an ac-bridge; bringing a coin/token in the vicinity of one arm of the ac-bridge; sensing an output signal of the ac-bridge; and associating the output signal with presence of the coin/token in the vicinity of the arm of the ac-bridge.