28223

Information

• Patent Grant
• 28223

• References
• Source

• Patent Number

  28,223

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1860
  164 years ago

• CPC

  • H01J23/26 - Helical slow-wave structures Adjustment therefor
  • H01J29/708 - in which the transit time of the electrons has to be taken into account
  • Y10T83/6895 - Plural reciprocable tools

• US Classifications

  • 083 - Cutting