1820822

Information

• Patent Grant
• 1820822

• References
• Source

• Patent Number

  1,820,822

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1931
  94 years ago

• CPC

  • F42B19/38 - with means for causing torpedoes to surface at end of run

• US Classifications

  • 114 - Ships