1991222

Information

• Patent Grant
• 1991222

• References
• Source

• Patent Number

  1,991,222

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  90 years ago

• CPC

  • F26B21/12 - Velocity of flow Quantity of flow
  • F26B21/024 - by using movable fan units

• US Classifications

  • 034 - Drying and gas or vapor contact with solids