2131028

Information

• Patent Grant
• 2131028

• References
• Source

• Patent Number

  2,131,028

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1938
  86 years ago

• CPC

  • G01R13/38 - using the steady or oscillatory displacement of a light beam by an electromechanical measuring system
  • G04C23/48 - acting at the ends of successive time intervals

• US Classifications

  • 250 - Radiant energy
  • 968 - Horology