US PATENT SUBCLASS 396 / 398
.~.~.~ Having switch actuated by perforation sensing pawl

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


396 /   HD   PHOTOGRAPHY

387  DF  WITH FILM DRIVE {7}
395  DF  .~ Film movement limiting means {2}
397  DF  .~.~ From film itself {3}
398.~.~.~ Having switch actuated by perforation sensing pawl

DEFINITION

Classification: 396/398

Having switch actuated by perforation sensing pawl:

(under subclass 397) Subject matter wherein the means for detecting film movement is a member which rides on the film and in response to a film opening makes or breaks a circuit connection.