3669331

Information

• Patent Grant
• 3669331

• References
• Source

• Patent Number

  3,669,331

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • G03B1/32 - Friction grippers or rollers
  • G03B21/113 - Handling roll films
  • G03D13/003 - Film feed or extraction in development apparatus

• US Classifications

  • 226 - Advancing material of indeterminate length