3922077

Information

• Patent Grant
• 3922077

• References
• Source

• Patent Number

  3,922,077

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • G03B21/2086 - Security or safety means in lamp houses
  • G03B21/50 - Control devices operated by the film strip during the run
  • G03B21/16 - Cooling Preventing overheating

• US Classifications

  • 352 - Optics: motion pictures