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US4415855A
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Combination analog-digital indicator
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Combination analog-digital indicator
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DE2335911A1
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Servo system for measurement and control equipment - has test pickup responding to the quantities to be measured
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Electromagnetic motive device
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Servo apparatus with photosensitive device and compensating circuit
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Photosensitive control apparatus with movable light control member
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Servo apparatus
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Remote controlled clock reset device
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Enclosed and confined area automatic fire extinguisher hose and apparatus
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Rotatably adjustable indicator instrument
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Removable and replaceable insturment lamps
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Illuminated instrument pointer
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Automatic fire extinguishing apparatus
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Illuminated indicator means and instrument
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Safety cable
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Magnetically operated indicator with u-shaped bearing frame
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Area security cable comprising strain and heat-responsive network
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US3594770A
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Printed-circuit type security apparatus for protecting areas
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US3526762A
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Illuminated indicating instrument with replaceable lamps
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GB1077802A
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Illuminated indicating instrument
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