1485776

Information

• Patent Grant
• 1485776

• References
• Source

• Patent Number

  1,485,776

• Date Filed

  Not available

• Date Issued

  Tuesday, March 4, 1924
  100 years ago

• CPC

  • B63B22/16 - specially adapted for marking a navigational route
  • B63B2201/16 - Radio
  • B63B2201/18 - Sonar
  • B63B2209/04 - water activated batteries

• US Classifications

  • 455 - Telecommunications
  • 367 - Communications, electrical: acoustic wave systems and devices