2205757

Information

• Patent Grant
• 2205757

• References
• Source

• Patent Number

  2,205,757

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1940
  84 years ago

• CPC

  • C10B33/04 - Pulling-out devices
  • C10G9/20 - Tube furnaces
  • E21B10/003 - with cutting edges facing in opposite axial directions

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning
  • 175 - Boring or penetrating the earth
  • 196 - Mineral oils: apparatus
  • 241 - Solid material comminution or disintegration