3669721

Information

• Patent Grant
• 3669721

• References
• Source

• Patent Number

  3,669,721

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • B05D3/0493 - using vacuum
  • A22C13/0013 - Chemical composition of synthetic sausage casings
  • B05C9/045 - in which the opposite sides of the work are the internal and external surfaces of hollow articles
  • B05D7/222 - of pipes
  • B29C47/8895 - using a bath
  • B05D2254/04 - Applying the material on the interior of the tube
  • B29C47/0023 - Hollow rigid articles having only one tubular passage

• US Classifications

  • 427 - Coating processes
  • 118 - Coating apparatus