3630015

Information

• Patent Grant
• 3630015

• References
• Source

• Patent Number

  3,630,015

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1971
  52 years ago

• CPC

  • G02F1/13318 - Circuits comprising a photodetector
  • G04C10/02 - the power supply being a radioactive or photovoltaic source
  • G04C10/04 - with means for indicating the condition of the power supply
  • G04G9/0017 - in which the light emitting display elements may be activated at will or are controlled in accordance with the ambient light
  • G04G9/0052 - using means to adjust the display in accordance with the ambient light
  • H01L31/147 - the light sources and the devices sensitive to radiation all being semiconductor devices characterised by at least one potential or surface barrier
  • H03K17/292 - in thyristor, unijunction transistor or programmable unijunction transistor switches
  • Y10S136/291 - Applications

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 136 - Batteries: thermoelectric and photoelectric
  • 250 - Radiant energy
  • 257 - Active solid-state devices
  • 968 - Horology