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. 06, 1977
Filed:
Mar. 03, 1975
Applicant:
Inventors:
Bruce K Johnson, Andover, MA (US);
David E Van Allen, Malden, MA (US);
George D Whiteside, Lexington, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 83 ; 354 86 ; 354173 ; 354213 ;
Abstract
A photographic apparatus including a 'sequencing system' for initiating and controlling the orderly performance of functions in a cycle of apparatus operation that includes the exposing and processing of a self-developing film unit. The 'sequencing system' includes a sequencing gear which makes a single revolution during the operating cycle and preferably initiates, controls and/or performs the function of selectively latching and unlatching a shutter, operating an electrical power switch, operating a film advance device and indexing a film counting device.