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:
Jan. 08, 1980
Filed:
Apr. 20, 1978
Applicant:
Inventors:
Conrad H Biber, Needham, MA (US);
Edwin K Shenk, Westford, MA (US);
Shirley Y Tam, Arlington, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354197 ;
Abstract
A camera having an automatic focus control system for an adjustable focus lens is provided with a demountable adjustable or fixed focus lens that incorporates a device having an adjustable or fixed focus lens characteristic that causes said automatic focus control system to vary in accordance with said lens characteristic. The device is removable with the lens and means are provided for interconnecting said device with said control system when the lens is mounted on said camera.