3506939

Information

• Patent Grant
• 3506939

• References
• Source

• Patent Number

  3,506,939

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1970
  54 years ago

• CPC

  • G05B19/16 - using magnetic record carriers
  • G06K7/088 - using magneto-sensitive switches
  • Y10T70/7893 - Permutation
  • Y10T70/7904 - Magnetic features

• US Classifications

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