496275

Information

• Patent Grant
• 496275

• References
• Source

• Patent Number

  496,275

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1893
  131 years ago

• CPC

  • D21C7/02 - Rotary digesters

• US Classifications

  • 162 - Paper making and fiber liberation
  • 366 - Agitating