1131351

Information

• Patent Grant
• 1131351

• References
• Source

• Patent Number

  1,131,351

• Date Filed

  Not available

• Date Issued

  Tuesday, March 9, 1915
  110 years ago

• CPC

  • B43L9/20 - Pivots

• US Classifications

  • 033 - Geometrical instruments
  • 330 - Amplifiers