2173421

Information

• Patent Grant
• 2173421

• References
• Source

• Patent Number

  2,173,421

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1939
  85 years ago

• CPC

  • B63B23/08 - the arms being articulated

• US Classifications

  • 114 - Ships
  • 212 - Traversing hoists