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. 22, 1983
Filed:
Mar. 26, 1982
Horst Pfeiffer, Aldingen, DE;
J. Hengstler K.G., Aldingen, DE;
Abstract
This invention relates to metal-coated credit cards and to appliances for marking said credit cards in order to make deductions from the credit represented by the card. It is an object of the invention to provide such a card and marking appliance which can be used for an automatic accounting of services used for merchandise taken, such as copies taken from automatic copiers. For this purpose the metal-coated credit card which is adapted to be marked by a marking appliance in order to make deductions from the credit represented by the card has electrically conductive areas separated by electrically non-conducting areas. The credit card comprises a code-representing area, particularly at one edge of the card, and a credit-representing area which is spaced from the edges of the card and can be electrically marked in incremental areas in order to make deductions from the credit represented by the card.