2493056

Information

• Patent Grant
• 2493056

• References
• Source

• Patent Number

  2,493,056

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1950
  75 years ago

• CPC

  • G03B1/46 - Rollers engaging face of film

• US Classifications

  • 226 - Advancing material of indeterminate length
  • 242 - Winding, tensioning, or guiding
  • 369 - Dynamic information storage or retrieval