2405990

Information

• Patent Grant
• 2405990

• References
• Source

• Patent Number

  2,405,990

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1946
  78 years ago

• CPC

  • F42B21/00 - Depth charges

• US Classifications

  • 116 - Signals and indicators
  • 033 - Geometrical instruments
  • 114 - Ships
  • 340 - Communications: electrical