3922588

Information

• Patent Grant
• 3922588

• References
• Source

• Patent Number

  3,922,588

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • G04G19/10 - Arrangements for supplying back-up power
  • G04C15/0054 - with power-reserve
  • Y10T307/625 - Storage battery or accumulator

• US Classifications

  • 318 - Electricity: motive power systems
  • 307 - Electrical transmission or interconnection systems
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology