2620827

Information

• Patent Grant
• 2620827

• References
• Source

• Patent Number

  2,620,827

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1952
  72 years ago

• CPC

  • F42B19/40 - by expelling liquid ballast

• US Classifications

  • 251 - Valves and valve actuation
  • 114 - Ships