3664140

Information

• Patent Grant
• 3664140

• References
• Source

• Patent Number

  3,664,140

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  53 years ago

• CPC

  • B63C3/08 - Tracks on slipways

• US Classifications

  • 405 - Hydraulic and earth engineering