1710630

Information

• Patent Grant
• 1710630

• References
• Source

• Patent Number

  1,710,630

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1929
  95 years ago

• CPC

  • B43L1/08 - flexible

• US Classifications

  • 281 - Books, strips, and leaves
  • 434 - Education and demonstration