1980998

Information

• Patent Grant
• 1980998

• References
• Source

• Patent Number

  1,980,998

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • B63B1/02 - deriving lift mainly from water displacement
  • B63B3/20 - of double type
  • B63B3/44 - Bilge keels
  • B63B41/00 - Drop keels
  • B63B2039/067 - effecting motion dampening by means of fixed or movable resistance bodies

• US Classifications

  • 114 - Ships