Marie van brittan brown and albert brown

Marie van brittan brown invention

  • The invention consisted, at the door, of an electrically controlled lock, several lensed peepholes with covers, a vertically sliding video scanner (camera) and controlling motors, loudspeaker and microphone as well as associated electronics, filters, power supply, radio receiver and transmitter. See more.
  • Marie van brittan brown and albert brown

    • Marie van brittan brown picture

  • Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician. In they invented an audio-visual home security system That same year they applied for a patent for their security system. It was granted three years later in See more.
  • Marie van brittan brown invention

    • Marie van brittan brown biography

  • Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician. In they invented an audio-visual home security system That same year they applied for a patent for their security system. It was granted three years later in See more.
  • Marie van brittan brown picture
    • Marie van brittan brown and albert brown Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician.
    Marie van brittan brown invention The invention consisted, at the door, of an electrically controlled lock, several lensed peepholes with covers, a vertically sliding video scanner (camera) and controlling motors, loudspeaker and microphone as well as associated electronics, filters, power supply, radio receiver and transmitter.
    Marie van brittan brown picture Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician.
    Marie van brittan brown biography Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician.

    Marie van brittan brown and albert brown

  • Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician. In they invented an audio-visual home security system That same year they applied for a patent for their security system. It was granted three years later in See more.
  • marie van brittan brown and albert brown
      • Marie van brittan brown and albert brown Marie Van Brittan Brown was an innovative African American inventor who, alongside her husband Albert Brown, created the first home security system in Her .
      Marie van brittan brown invention The invention consisted, at the door, of an electrically controlled lock, several lensed peepholes with covers, a vertically sliding video scanner (camera) and controlling motors, loudspeaker and microphone as well as associated electronics, filters, power supply, radio receiver and transmitter.
      Marie van brittan brown picture Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician.
      Marie van brittan brown biography Marie Van Brittan Brown (October 30, – February 2, ) was an American nurse, her husband Albert L. Brown, an electronics technician.