1488641

Information

• Patent Grant
• 1488641

• References
• Source

• Patent Number

  1,488,641

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1924
  100 years ago

• CPC

  • B43L11/045 - with cords or like flexible elements

• US Classifications

  • 033 - Geometrical instruments