1681121

Information

• Patent Grant
• 1681121

• References
• Source

• Patent Number

  1,681,121

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1928
  96 years ago

• CPC

  • G01B3/166 - provided with a measuring scale
  • G04D7/001 - Purely mechanical measuring and testing apparatus

• US Classifications

  • 033 - Geometrical instruments
  • 968 - Horology