2169061

Information

• Patent Grant
• 2169061

• References
• Source

• Patent Number

  2,169,061

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1939
  85 years ago

• CPC

  • G03D3/137 - provided with transport speed regulation

• US Classifications

  • 396 - Photography
  • 226 - Advancing material of indeterminate length