GAS ESTAMATING DEVICE
PURPOSE:To make the construction of the device simple and to reduce the numbers of troubles which may occur by opening a solenoid valve with the insertion of a coin and by controlling so that the solenoid valve closes after receiving a pulse signal from the gas meter and after the specified amount o...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PURPOSE:To make the construction of the device simple and to reduce the numbers of troubles which may occur by opening a solenoid valve with the insertion of a coin and by controlling so that the solenoid valve closes after receiving a pulse signal from the gas meter and after the specified amount of gas has been supplied. |
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