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. 27, 1977
Filed:
Aug. 15, 1975
Applicant:
Inventors:
Milan A Broderick, Riverwoods, IL (US);
Eugene V Mateja, Norridge, IL (US);
Assignee:
Bell & Howell Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 40 ; 355 65 ; 355 77 ;
Abstract
A microfilm camera uses an instant imaging film, such as a vesicular film. Simultaneously with the exposure of the film, a small blip is recorded along the length of the film. On readout, the camera may be set to count the number of blips and thereby stop a searching reader at a preselected frame. The invention is primarily directed to a circuit for controlling the recording of the microfilm images and the blips on such instant imaging or vesicular film.