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:
Aug. 27, 1991
Filed:
Apr. 09, 1990
Stephen H Mayer, El Toro, CA (US);
David Hall, Newport Beach, CA (US);
Professional Coin Grading Service, Inc., Santa Ana, CA (US);
Abstract
A tamperproof coin case defined by two interlocking plastic plate members ultrasonically bonded together to define a unitary assembly within which a coin and its certificate of authenticity may be permanently secured. One plate member includes a cavity for fully receiving the other plate member therein, with opposing inner surfaces of the plate members being provided with corresponding cylindrical recesses which collectively form a cylindrical cavity within which a pliable plastic retention ring is disposed for securing the coin in a stationary position and permitting its obverse and reverse sides to be viewed through dome-shaped windows provided on the opposite sides of the case. The case is also provided with outwardly extending circumferential flanges which permit a plurality of cases to be vertically stacked for transport or storage.