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:
Apr. 12, 1994
Filed:
Nov. 06, 1989
Applicant:
Inventors:
Thomas N Robinson, Lincoln Township, Berrien County, MI (US);
Mark D Nicol, Stevensville, MI (US);
Anthony M Olson, Stevensville, MI (US);
Todd R Witkowski, Stevensville, MI (US);
Assignee:
Zenith Data Systems Corporation, Buffalo Grove, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395325 ; 364D / ; 36492793 ; 3649294 ; 36492691 ;
Abstract
A computer system includes a control circuit having a request input, and a pair of connectors which are electrically coupled to the control circuit and are each connected to the request input of the control circuit, each connector being capable of removably receiving a circuit card. The control circuit includes a checking arrangement for detecting a condition in which the connectors each have therein a card having a request output controlling the request input of the control circuit.