2551730

Information

• Patent Grant
• 2551730

• References
• Source

• Patent Number

  2,551,730

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1951
  73 years ago

• CPC

  • G07F15/12 - in which metering is on a time basis
  • H01H7/08 - with timing by mechanical speed-control devices
  • Y10S200/03 - Coin operated

• US Classifications

  • 194 - Check-actuated control mechanisms
  • 200 - Electricity: circuit makers and breakers
  • 318 - Electricity: motive power systems