3712416

Information

• Patent Grant
• 3712416

• References
• Source

• Patent Number

  3,712,416

• Date Filed

  Not available

• Date Issued

  Tuesday, January 23, 1973
  52 years ago

• CPC

  • F02M35/1216 - by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
  • F02M35/1244 - using interference; Masking or reflecting sound
  • F02M35/1261 - Helmholtz resonators
  • F02M35/162 - Motorcycles; All-terrain vehicles

• US Classifications

  • 181 - Acoustics
  • 123 - Internal-combustion engines