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FR1458035A
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Pulse regulator for stabilizing the number of revolutions of electric commutator motors
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US3390316A
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Pulse speed regulator for an electric motor
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GB1093097A
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Improvements in or relating to electric motors
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US3348113A
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Speed control circuit for a multispeed electric commutator motor
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FR1406179A
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Push-button dial selector, in particular for controlling gearboxes of recording devices or the like
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FR1402527A
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Multi-stage gearbox, in particular for moving mechanism of recording devices
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DE1238981B
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Circular push-button selector, especially for actuating the gearbox of kymographs
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FR1455775A
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Cylindrical rotary oxygenator especially for blood circulation devices
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FR1371490A
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Electric capacitor
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FR1367540A
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Device for detecting uterine contractions in childbirth
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FR1351154A
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Automatic device for the continuous quantitative sampling of biological secretions
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FR1342597A
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Paddlewheel measuring instrument with several inputs for measuring a quantity of liquid
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FR1342596A
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Circulating adjustment device, in particular for a water meter as well as the meter equipped with such a device
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FR1330025A
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Housing for water meter and meter provided with said housing
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FR1217596A
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Vane wheel water meter
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FR1126857A
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Water flow meter
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GB784759A
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Improvements in or relating to water-meters
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CA790166A
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Impulse regulator of the speed of electric commutator motors
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CA828349A
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Inductively loaded amplifier
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CA794503A
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Push-pull pulse width modulator
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