3871808

Information

• Patent Grant
• 3871808

• References
• Source

• Patent Number

  3,871,808

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1975
  50 years ago

• CPC

  • D21G1/002 - Opening or closing mechanisms; Regulating the pressure
  • B29B7/68 - Positioning of rollers
  • B29C43/24 - Calendering
  • Y10S425/235 - Calendar

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus