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Publication of NL159570BpublicationCriticalpatent/NL159570B/xx
H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
NL7315441.A1951-02-07Inrichting voor het behandelen van voedingsmiddelen.
NL159570B
(nl)