1505811

Information

• Patent Grant
• 1505811

• References
• Source

• Patent Number

  1,505,811

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1924
  100 years ago

• CPC

  • G04F3/04 - Additional arrangements in connection with ordinary non-electric clocks for this purpose

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 340 - Communications: electrical
  • 968 - Horology