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:
Dec. 22, 1981
Filed:
Feb. 04, 1980
Applicant:
Inventor:
Reinhard Sobotta, Brunswick, DE;
Assignee:
Rollei-Werke Franke & Heidecke GmbH, Brunswick, DE;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ;
U.S. Cl.
CPC ...
353119 ; 353 42 ; 353103 ;
Abstract
A slide projector having a remote control unit which is removable engageable with the slide projector. When the control unit is disengaged from the projector, it is removably engageable with an accessory which can be a further control or indicating device. Electrical contacts on the control unit electrically communicate with contacts in an aperture located on the projector and also a similar aperture located on the accessory. Thus, during remote control operations, an additional function or indication can easily be added to the control unit.