1861680

Information

• Patent Grant
• 1861680

• References
• Source

• Patent Number

  1,861,680

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1932
  92 years ago

• CPC

  • F41G5/12 - acoustically influenced

• US Classifications

  • 235 - Registers
  • 089 - Ordnance
  • 181 - Acoustics
  • 475 - Planetary gear transmission systems or components