2889503

Information

• Patent Grant
• 2889503

• References
• Source

• Patent Number

  2,889,503

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1959
  65 years ago

• CPC

  • G01R13/08 - Electromechanical recording systems using a mechanical direct-writing method
  • G01D15/12 - Magnetic recording elements
  • G01R13/38 - using the steady or oscillatory displacement of a light beam by an electromechanical measuring system
  • H02K41/035 - Dc motors Unipolar motors

• US Classifications

  • 318 - Electricity: motive power systems
  • 310 - Electrical generator or motor structure
  • 346 - Recorders