2780890

Information

• Patent Grant
• 2780890

• References
• Source

• Patent Number

  2,780,890

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1957
  68 years ago

• CPC

  • C03B37/091 - Indirect-resistance heating
  • C03B5/0336 - Shaft furnaces
  • C03B5/1875 - of the screw or pump-action type
  • C03B5/207 - Foraminous or mesh screens
  • C03B37/02 - by drawing or extruding
  • C03B37/0209 - by means of a solid heat sink
  • C03B37/08 - Bushings
  • C03B37/081 - Indirect-melting bushings

• US Classifications

  • 065 - Glass manufacturing