1821905

Information

• Patent Grant
• 1821905

• References
• Source

• Patent Number

  1,821,905

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1931
  93 years ago

• CPC

  • B41L1/328 - Removing carbon sheets

• US Classifications

  • 462 - Books, strips, and leaves for manifolding