3851811

Information

• Patent Grant
• 3851811

• References
• Source

• Patent Number

  3,851,811

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • G03B1/44 - Guides engaging edge of film

• US Classifications

  • 242 - Winding, tensioning, or guiding