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GB469821A
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Improvements in flowmeters
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DE651765C
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Flow meter for gases and liquids
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DE633842C
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Meter and regulator for currents in closed lines
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DE630928C
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Device for monitoring and adjusting the amount of liquid flowing out of one or more openings in a pipeline
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DE621401C
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Device for monitoring the filling and performance of a refrigeration system
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DE605158C
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Braking device on regulators
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DE596629C
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Volume regulator for liquids
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DE632676C
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Flow regulator
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DE622333C
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Flow regulator for gases
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DE580674C
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Float knife
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DE573359C
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Flow meter
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DE567219C
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Flow meter
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DE576402C
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Large diameter melting tube for vacuum vessels
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DE577572C
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Float knife
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DE568586C
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Float knife
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DE578677C
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Flow meter with a rotating float
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DE602433C
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Flow meter for gases and liquids
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DE469184C
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Volume regulator to keep the flow rates of gases or liquids constant
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DE507823C
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Device for moving metal parts inside vacuum or overpressure vessels, in particular vacuum discharge tubes
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DE447935C
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Device for filling ampoules
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