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:
Sep. 10, 1985
Filed:
Jan. 27, 1984
Applicant:
Inventors:
Richard M Cheng, Notre Dame de Grace, CA;
Rock S Lee, St. Hubert, CA;
Assignee:
Canadian Patents and Development Limited, Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03D / ; B01F / ;
U.S. Cl.
CPC ...
366274 ; 74 29 ; 354328 ; 366278 ;
Abstract
A drive means for a photographic film developing tank and a developing tank for use therewith, including magnetic coupling means connecting an agitator in the tank with the reciprocating-type drive means, such as a rack and pinion, and an electric motor.