发明申请
US20110253695A1 Electrical circuit 有权
电路

  • 专利标题: Electrical circuit
  • 专利标题(中): 电路
  • 申请号: US12798928
    申请日: 2010-04-14
  • 公开(公告)号: US20110253695A1
    公开(公告)日: 2011-10-20
  • 发明人: Thomas Graham
  • 申请人: Thomas Graham
  • 主分类号: H05B1/00
  • IPC分类号: H05B1/00
Electrical circuit
摘要:
An indicating lamp is provided on the exterior of a vent port to indicate failure of a heater within the vent port. An electrical circuit is provided to energize the indicating lamp in response to failure of one or the other of a pair of heaters within the vent port.
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