2808144

Information

• Patent Grant
• 2808144

• References
• Source

• Patent Number

  2,808,144

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1957
  67 years ago

• CPC

  • H01J25/00 - Transit-time tubes
  • B41J19/10 - Dash-pots
  • F16K1/42 - Valve seats
  • H01J25/76 - Dynamic electron-multiplier tubes

• US Classifications

  • 400 - Typewriting machines
  • 267 - Spring devices