Eindhoven, NL
Information
Patent Grant
U.S. Philips Corporation
Petrus W. G. Welles
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
U.S. Philips Corporation
Petrus W. G. Welles
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
U.S. Philips Corporation
Petrus W. G. Welles
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
U.S. Philips Corporation
Frits A. Steenhof
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
U.S. Philips Corporation
Marcellinus J. J. C. Annegarn
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
U.S. Philips Corporation
Laurens Doornhein
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
U.S. Philips Corporation
Antonius H. H. J. Nillesen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
