2972378

Information

• Patent Grant
• 2972378

• References
• Source

• Patent Number

  2,972,378

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1961
  63 years ago

• CPC

  • D21F3/083 - perforated
  • B28B1/42 - using mixtures containing fibres
  • B28B1/52 - specially adapted for producing articles from mixtures containing fibres
  • B28B1/527 - by delivering the materials on a rotating drum
  • B28B3/123 - on material in moulds or on moulding surfaces moving continuously underneath or between the rollers
  • B28B3/126 - on material passing directly between the co-operating rollers
  • B30B9/20 - using rotary pressing members, other than worms or screws
  • D21F3/02 - Wet presses
  • D21F3/06 - Means for regulating the pressure
  • D21J1/00 - Fibreboard

• US Classifications

  • 162 - Paper making and fiber liberation
  • 100 - Presses