3813784

Information

• Patent Grant
• 3813784

• References
• Source

• Patent Number

  3,813,784

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • G01V1/303 - for determining velocity profiles or travel times
  • G06G1/14 - in which a straight or curved line has to be drawn from given points on one or more input scales to one or more points on a result scale

• US Classifications

  • 033 - Geometrical instruments
  • 367 - Communications, electrical: acoustic wave systems and devices