1786504

Information

• Patent Grant
• 1786504

• References
• Source

• Patent Number

  1,786,504

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1930
  94 years ago

• CPC

  • B42D3/008 - applied on the back of book covers

• US Classifications

  • 281 - Books, strips, and leaves