2980814

Information

• Patent Grant
• 2980814

• References
• Source

• Patent Number

  2,980,814

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1961
  63 years ago

• CPC

  • H01J29/54 - Arrangements for centring ray or beam

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets