1729172

Information

• Patent Grant
• 1729172

• References
• Source

• Patent Number

  1,729,172

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1929
  95 years ago

• CPC

  • B28B21/72 - Producing multilayer tubes
  • Y10S264/32 - Processes in molding using asbestos or asphalt
  • Y10S264/57 - Processes of forming layered products

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 138 - Pipes and tubular conduits
  • 405 - Hydraulic and earth engineering