1973588

Information

• Patent Grant
• 1973588

• References
• Source

• Patent Number

  1,973,588

• Date Filed

  Not available

• Date Issued

  Tuesday, September 11, 1934
  90 years ago

• CPC

  • G03B21/50 - Control devices operated by the film strip during the run
  • Y10S200/11 - Web or thread actuated

• US Classifications

  • 352 - Optics: motion pictures
  • 200 - Electricity: circuit makers and breakers