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. 31, 1978
Filed:
Mar. 09, 1977
Applicant:
Inventors:
Josef Gersch, Unterhaching, DT;
Otto Wiedemann, Starnberg, DT;
Assignee:
AGFA-Gevaert, AG, Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
242 711 ;
Abstract
A roll film cassette has a tubular wall provided with an axially extending film slot. At least one open axial end of the tubular wall is provided with an axially projecting rib. A cover for this open end is formed with an annular recess in which the rib is receivable to form with the cover a labyrinth-type light seal; the recess is interrupted at one location by a projection which enters into the film slot when the cover is in position closing the open end.