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FREDERIC BALLENCY
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FREDERIC BALLENCY
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H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
H01R33/05—Two-pole devices
FR507066A1919-12-041919-12-04Douille orientable pour lampe à incandescence de projection cinématographique
ExpiredFR507066A
(fr)
Dispositif de réglage du miroir, de la lampe et du condensateur, dans les lanternes à lumière électrique par incandescence pour projections cinématographiques
Dispositif de réglage du miroir, de la lampe et du condensateur, dans les lanternes à lumière électrique par incandescence pour projections cinématographiques