3921935

Information

• Patent Grant
• 3921935

• References
• Source

• Patent Number

  3,921,935

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • G03B17/265 - specially adapted for motion picture film
  • G03B21/325 - Endless cassettes

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 352 - Optics: motion pictures