3139087

Information

• Patent Grant
• 3139087

• References
• Source

• Patent Number

  3,139,087

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1964
  60 years ago

• CPC

  • B63C11/26 - Communication means
  • B63C11/205 - with air supply by suction from diver
  • B63B2201/02 - Audible

• US Classifications

  • 128 - Surgery
  • 446 - Amusement devices: toys