2975396

Information

• Patent Grant
• 2975396

• References
• Source

• Patent Number

  2,975,396

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1961
  63 years ago

• CPC

  • F41J9/04 - Seagoing targets
  • G01S1/72 - using ultrasonic, sonic or infrasonic waves

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices
  • 114 - Ships
  • 434 - Education and demonstration