1969979

Information

• Patent Grant
• 1969979

• References
• Source

• Patent Number

  1,969,979

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1934
  90 years ago

• CPC

  • F27B7/36 - Arrangements of air or gas supply devices
  • F27B7/02 - of multiple-chamber or multiple-drum type
  • F27B2007/027 - with more than one drum
  • F27B2007/165 - forming a helical lifting projection

• US Classifications

  • 202 - Distillation: apparatus