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(up)date manufacturer
2007-01-18 Adzam
2007-01-18 Arcturus
2007-08-28 AEG
2003-04-01 Belvu
2006-05-28 Brimar
2007-04-06 Brown Boveri
2003-07-12 Burroughs
2006-07-10 Cossor
2007-06-17 CSF
2006-05-28 Du Mont
2005-07-22 EEV
2006-05-28 Ericsson
2005-10-22 Eimac
2008-04-26 Gecovalve
2006-05-28 General Electric
2006-04-02 Hitachi
2006-05-01 Industro
2008-02-16 ITT
2006-05-28 Marconi
2006-05-28 Mashpriborintorg
2005-06-02 Mazda
2003-04-01 Mazda - French
2006-10-13 Mullard
2003-04-01 Neotron
2006-07-23 Osram
2008-05-01 Philips
2006-02-12 La Radiotechnique
2007-09-07 Rauland
2007-09-07 Raytheon
2007-08-16 RCA
2003-03-30 RFT
2006-05-28 Shuguang
2006-02-02 Siemens
2007-09-07 STC
2007-11-01 Sylvania
2004-03-12 Telefunken
2003-05-07 Tesla
2006-04-01 Toshiba
2006-05-28 Tung-Sol
2007-06-17 Tungsram
2008-05-01 United Electronics
2006-02-02 Valvo
2003-03-30 Victoreen
2007-09-08 Westinghouse