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REUNIE DE LAMPES A INCANDESCEN
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REUNIE DE LAMPES A INCANDESCEN
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Application filed by REUNIE DE LAMPES A INCANDESCENfiledCriticalREUNIE DE LAMPES A INCANDESCEN
Application grantedgrantedCritical
Publication of FR647372ApublicationCriticalpatent/FR647372A/fr
H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
H01J9/42—Measurement or testing during manufacture
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Electrotherapy Devices
(AREA)
FR647372D1927-01-241928-01-13Procédé de détermination de l'équivalent de tension des courants électriques detension variable
ExpiredFR647372A
(fr)