457616

Information

• Patent Grant
• 457616

• References
• Source

• Patent Number

  457,616

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1891
  133 years ago

• CPC

  • B01F7/247 - with additional mixing elements other than helices; having inner and outer helices; with helices surrounding a guiding tube

• US Classifications

  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
  • 127 - Sugar, starch, and carbohydrates