2077490

Information

• Patent Grant
• 2077490

• References
• Source

• Patent Number

  2,077,490

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1937
  87 years ago

• CPC

  • B41B13/04 - with means for justifying

• US Classifications

  • 355 - Photocopying
  • 396 - Photography