CATEA.orgassistivetech.netATWiki
Personal tools
Views

Interested in disability history? Check out what happened Today in AT History!

November 23

From ATWiki

Jump to: navigation, search
November
SunMonTueWedThuFriSat
      1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30

Births

  • 1869 - Valdemar Poulsen - Danish Engineer. Poulsen invented the telephone answering machine which used magnetic recording which was invented a few years earlier by Oberlin Smith.[1]


References

  1. Allen, Bob. "100 YEARS OF MAGNETIC RECORDING: POULSEN'S PATENT." Association of Motion Picture Sound. 1998. Accessed on March 13, 2008.
  2. http://www.whonamedit.com/doctor.cfm/826.html