Resources Contact Us Home
Browse by Category: Main > Optical & Optics
Class Information
Number: 396/524
Name: Photography > Camera detail > Detachable or removable film holder unit > Plate or cut film holder > Having dark slide
Description: Subject matter wherein a removable or displaceable sliding member, located parallel and adjacent to the image-receiving plate or sheet, protects the light- sensitive material from outside light before and after exposure and is removed or displaced while in exposing position to uncover the image receiving surface to permit exposure.

Sub-classes under this class:

Class Number Class Name Patents
396/526 Double holder 24
396/525 Having hinged part 0

Patents under this class:

Patent Number Title Of Patent Date Issued
6520692 Exposure apparatus for printing plates Feb. 18, 2003
5774753 Film sheet unit which easily accepts a lid of a film pack Jun. 30, 1998
5754908 Sheet film pack with a pair of extended guide rails May. 19, 1998
5710952 Sheet film pack with resilient light trapping mechanism Jan. 20, 1998
5708894 Sheet film pack Jan. 13, 1998
5594522 Cassette for enclosing a plurality of negative film units Jan. 14, 1997
5345289 Film cassette dark slide incorporating a projection for restraining impact-generated movement Sep. 6, 1994
5130731 Film holder Jul. 14, 1992
4949112 Sheet film cassette for photographic cameras Aug. 14, 1990
4903063 Instant film pack Feb. 20, 1990
D302434 Film holder Jul. 25, 1989
4823164 Image forming apparatus Apr. 18, 1989
4804989 Thin, large format film holder and adapter therefor Feb. 14, 1989
4788566 Photographic cassette for manipulation and exposure of a light-sensitive sheet Nov. 29, 1988
4688915 Film cassette system Aug. 25, 1987
4678302 Apparatus for handling light-sensitive photographic sheet material in ambient light Jul. 7, 1987
4634249 Film holder for putting marks on film Jan. 6, 1987
4614414 Dark slide locking system for film holder Sep. 30, 1986
4568163 Camera back Feb. 4, 1986
4566771 Photographic film assemblage Jan. 28, 1986
4534053 Apparatus for exchanging an intensifying screen and a negative in a film packet Aug. 6, 1985
4388992 Container suitable for holding a stack of photographic sheets Jun. 21, 1983
3987466 Switching device for an automatic camera Oct. 19, 1976

  Recently Added Patents
Method or system for investing and/or trading
Evaluation compiler method
Lithographic apparatus and device manufacturing method
Modular utility rack
System and method for detecting crop rows in an agricultural field
Dimmer system and damper circuit thereof
Toy track intersection component
  Randomly Featured Patents
Vehicle safety running apparatus
Method of using polymeric sulfide mineral depressants
Adhesive backed diaper packet
Golf club head
Spectrum displaying apparatus for multichannel signals
Articles of manufacture containing increased stability low concentration gases and methods of making and using the same
HCCI engine combustion control
Photosensitive, radiation sensitive, thermally sensitive and pressure sensitive silver sodalite materials
Window assembly for positron emitter
Organomineral products, a process for their manufacture and their use