3746992

Information

• Patent Grant
• 3746992

• References
• Source

• Patent Number

  3,746,992

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1973
  52 years ago

• CPC

  • B43L5/022 - with magnets
  • Y10S33/01 - Magnetic

• US Classifications

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