2973787

Information

• Patent Grant
• 2973787

• References
• Source

• Patent Number

  2,973,787

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1961
  64 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0025 - by winding wire upon a support

• US Classifications

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