2508425

Information

• Patent Grant
• 2508425

• References
• Source

• Patent Number

  2,508,425

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1950
  74 years ago

• CPC

  • G07C1/20 - Checking timed patrols
  • Y10T70/675 - Serially operable

• US Classifications

  • 340 - Communications: electrical
  • 070 - Locks