3813939

Information

• Patent Grant
• 3813939

• References
• Source

• Patent Number

  3,813,939

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • G01F1/712 - using auto-correlation or cross-correlation detection means
  • G01P5/006 - the jet used is composed of ionised or radioactive particles
  • G01P5/18 - by measuring the time taken to traverse a fixed distance

• US Classifications

  • 073 - Measuring and testing
  • 702 - Data processing: measuring, calibrating, or testing