3381648

Information

• Patent Grant
• 3381648

• References
• Source

• Patent Number

  3,381,648

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1968
  56 years ago

• CPC

  • B63B41/00 - Drop keels
  • B63B2041/006 - Telescopically collapsible keels

• US Classifications

  • 114 - Ships