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ES374612A1
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Piping device for passing flow apparatus housings. (Machine-translation by Google Translate, not legally binding)
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US3266310A
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Compensating means for a meter such as a gas meter
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US2826214A
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Pressure regulators for gas meters
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ES128814A1
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A device for rectifying the curve of measurement errors in gas meters with mobile walls and slow maneuvering.
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ES128222A1
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Dry system gas meter.
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DE581372C
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Two-chamber dry gas meter
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DE591930C
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Gas self-sellers
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DE535941C
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Safety valve for the burner of gas pipes
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DE521853C
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Main gas tap
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DE553747C
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Coin gas meter
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DE515711C
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Connection device for gas meter
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DE494733C
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Coin gas meter
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DE506482C
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Coin gas meter in which the automatic mechanism is separated from the point at which the gas inlet pipe enters the gas meter mechanism
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DE504264C
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Control for dry gas meters
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DE538945C
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Regulator for temperatures or pressures with corrugated membrane
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DE481434C
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Coin gas meter with changeable wheels for tariff change
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