3918549

Information

• Patent Grant
• 3918549

• References
• Source

• Patent Number

  3,918,549

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1975
  49 years ago

• CPC

  • F01N1/22 - the parts being resilient walls
  • B25D17/12 - of exhaust silencers
  • F01N1/16 - by using movable parts

• US Classifications

  • 181 - Acoustics