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ZEISS CARL SOC
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ZEISS CARL SOC
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Publication of FR511735ApublicationCriticalpatent/FR511735A/fr
G02B15/00—Optical objectives with means for varying the magnification
B—PERFORMING OPERATIONS; TRANSPORTING
B22—CASTING; POWDER METALLURGY
B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
B22D13/00—Centrifugal casting; Casting by using centrifugal force
B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
B22D13/101—Moulds
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Physics & Mathematics
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Engineering & Computer Science
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Mechanical Engineering
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General Physics & Mathematics
(AREA)
Optics & Photonics
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Pressure Vessels And Lids Thereof
(AREA)
FR511735D1914-07-281915-07-21Lentille divergente simple, en forme de ménisque, ajustable au devant d'un objectif photographique
ExpiredFR511735A
(fr)
Appareil destiné à être mis en connexion avec l'obturateur d'un objectif photographique pour en produire la déclanchement à un moment déterminé