1875469

Information

• Patent Grant
• 1875469

• References
• Source

• Patent Number

  1,875,469

• Date Filed

  Not available

• Date Issued

  Tuesday, September 6, 1932
  92 years ago

• CPC

  • F26B15/26 - with movement in a helical path

• US Classifications

  • 034 - Drying and gas or vapor contact with solids
  • 414 - Material or article handling