3861621

Information

• Patent Grant
• 3861621

• References
• Source

• Patent Number

  3,861,621

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1975
  49 years ago

• CPC

  • G03B21/323 - Cassettes

• US Classifications

  • 242 - Winding, tensioning, or guiding