1639047

Information

• Patent Grant
• 1639047

• References
• Source

• Patent Number

  1,639,047

• Date Filed

  Not available

• Date Issued

  Tuesday, August 16, 1927
  97 years ago

• CPC

  • F01N13/1861 - the assembly using parts formed by casting or moulding
  • F01N1/12 - using spirally or helically shaped channels
  • F01N13/1855 - the connection being realised by using bolts, screws, rivets or the like
  • F01N13/1894 - the parts being assembled in longitudinal direction
  • F01N2450/24 - by bolts, screws, rivets or the like
  • F01N2470/28 - Tubes being formed by moulding or casting x

• US Classifications

  • 181 - Acoustics