3504177

Information

• Patent Grant
• 3504177

• References
• Source

• Patent Number

  3,504,177

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1970
  55 years ago

• CPC

  • H01J37/18 - Vacuum locks; Means for obtaining or maintaining the desired pressure within the vessel
  • F16J15/168 - which permits material to be continuously conveyed
  • H01J5/30 - using packing-material
  • H01J2893/0045 - Non-solid connections
  • Y10S277/906 - Seal for article of indefinite length
  • Y10S277/913 - Seal for fluid pressure below atmospheric

• US Classifications

  • 250 - Radiant energy
  • 118 - Coating apparatus
  • 277 - Seal for a joint or juncture
  • 347 - Incremental printing of symbolic information