2656721

Information

• Patent Grant
• 2656721

• References
• Source

• Patent Number

  2,656,721

• Date Filed

  Not available

• Date Issued

  Tuesday, October 27, 1953
  70 years ago

• CPC

  • G01L9/0088 - using photoelectric means
  • G01L11/008 - electrostatic or electromagnetic counterbalancing forces

• US Classifications

  • 073 - Measuring and testing
  • 116 - Signals and indicators
  • 250 - Radiant energy