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Publication of NL158057BpublicationCriticalpatent/NL158057B/xx
H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
NL7504256.A1950-12-20Landbouwwerktuig met een aan een trekker koppelbaar gesteldeel en een ten opzichte daarvan opklapbaar gesteldeel.
NL158057B
(nl)