3613830

Information

• Patent Grant
• 3613830

• References
• Source

• Patent Number

  3,613,830

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1971
  53 years ago

• CPC

  • B21D53/88 - other parts for vehicles
  • F01N1/02 - by using resonance
  • F01N2490/155 - being disposed one after the other in flow direction
  • Y10T29/49398 - Muffler, manifold or exhaust pipe making
  • Y10T29/49924 - of parallel side-by-side elongated members
  • Y10T428/12236 - Panel having nonrectangular perimeter
  • Y10T428/12257 - Only one plane of symmetry

• US Classifications

  • 181 - Acoustics
  • 029 - Metal working
  • 138 - Pipes and tubular conduits
  • 428 - Stock material or miscellaneous articles