1834826

Information

• Patent Grant
• 1834826

• References
• Source

• Patent Number

  1,834,826

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1931
  93 years ago

• CPC

  • B65G11/04 - for mail in buildings

• US Classifications

  • 104 - Railways
  • 040 - Card, picture, or sign exhibiting