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HUGO UMBEHR
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HUGO UMBEHR
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Application filed by HUGO UMBEHRfiledCriticalHUGO UMBEHR
Application grantedgrantedCritical
Publication of FR451811ApublicationCriticalpatent/FR451811A/fr
H01H51/34—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
Landscapes
Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
FR451811D1912-12-121912-12-12Dispositif pour la réduction de la durée des étincelles dans les appareils magnéto-électriques producteurs d'étincelles
ExpiredFR451811A
(fr)