Villach
Austria
6
2011-02-03
The entities that hold a legal rights for patent applications filed by inventor SCHWINGSHACKL David:
David SCHWINGSHACKL from Villach, AT has applied for patents for these inventions. The list has both pending applications and granted patents:
Line testing
#2 | 2009-02-26Echo cancellation
#3 | 2007-08-09Method and device for transmitting speech signals via a data telecommunications network
#4 | 2007-01-16Line termination device for a telephone subscriber line
#5 | 2005-12-29Method for reducing a computational complexity in non-linear filter arrangements as well as corresponding filter arrangements
#6 | 2005-05-26Transmission apparatus with variable impedance matching
3336828 ⎘