3212725

Information

• Patent Grant
• 3212725

• References
• Source

• Patent Number

  3,212,725

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1965
  59 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0026 - Machines for manufacture of grids or anodes

• US Classifications

  • 140 - Wireworking
  • 242 - Winding, tensioning, or guiding