1499683

Information

• Patent Grant
• 1499683

• References
• Source

• Patent Number

  1,499,683

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1924
  100 years ago

• CPC

  • F01N1/20 - having oscillating or vibrating movement
  • F01N1/16 - by using movable parts

• US Classifications

  • 181 - Acoustics