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:
Jun. 29, 1976
Filed:
Jul. 29, 1974
Applicant:
Inventor:
George T Brown, Jr, Dayton, OH (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G02B / ; G03B / ;
U.S. Cl.
CPC ...
353 / ; 350241 ; 353120 ; 355125 ;
Abstract
Disclosed is an improved microform card which includes a wear-strip spacer element structure located on the card surface in one of several configurations, some containing coded secondary information. The wear-strip spacer elements separate the card surface from adjacent optical elements in a card utilizing apparatus by a distance sufficient to prevent the formation of colored Newton rings at the card-to-optical-element interface. Card utilization equipment capable of recognizing the presence of wear-strip spacer elements on a microform card and using any secondary information encoded thereon is also disclosed.