3675877

Information

• Patent Grant
• 3675877

• References
• Source

• Patent Number

  3,675,877

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1972
  52 years ago

• CPC

  • G03B21/42 - Preventing damage to film due to abnormal operation of projector
  • G03B21/328 - Means for fixing the film on the periphery of a reel
  • G03B21/43 - Driving mechanisms

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 226 - Advancing material of indeterminate length