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DAVID FARGIER
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DAVID FARGIER
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Application filed by DAVID FARGIERfiledCriticalDAVID FARGIER
Application grantedgrantedCritical
Publication of FR486646ApublicationCriticalpatent/FR486646A/fr
H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
H01T13/00—Sparking plugs
H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
H01T13/36—Sparking plugs characterised by features of the electrodes or insulation characterised by the joint between insulation and body, e.g. using cement
FR486646D1917-08-291917-08-29Perfectionnement apporté dans les bougies d'allumage des moteurs à explosion
ExpiredFR486646A
(fr)