3740991

Information

• Patent Grant
• 3740991

• References
• Source

• Patent Number

  3,740,991

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  51 years ago

• CPC

  • B29B13/024 - Hollow bodies
  • B21D7/16 - Auxiliary equipment
  • B21D9/18 - for heating or cooling of bends
  • B29C53/083 - bending longitudinally
  • B29C2035/0822 - using IR radiation
  • B29L2023/22 - Tubes or pipes
  • Y10T29/49812 - Temporary protective coating, impregnation, or cast layer

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working
  • 425 - Plastic article or earthenware shaping or treating: apparatus