1325354

Information

• Patent Grant
• 1325354

• References
• Source

• Patent Number

  1,325,354

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1919
  105 years ago

• CPC

  • G01P3/06 - using a friction gear

• US Classifications

  • 073 - Measuring and testing
  • 310 - Electrical generator or motor structure
  • 324 - Electricity: measuring and testing
  • 367 - Communications, electrical: acoustic wave systems and devices