3820348

Information

• Patent Grant
• 3820348

• References
• Source

• Patent Number

  3,820,348

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • B63C11/2245 - With provisions for connection to a buoyancy compensator
  • B63C2011/027 - Shells for diving equipment, i.e. substantially rigid housings or covers

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 114 - Ships
  • 441 - Buoys, rafts, and aquatic devices