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ITMI940304D0
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One-piece device for maintaining a reciprocating or pendular movement
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FR2697387A1
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Device intended to maintain an alternating or pendulum movement.
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FR2676575A1
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Device for ringing bells on the flight.
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FR2631729A1
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DEVICE FOR DISPLAYING NUMBERS OR THE LIKE USING TILTING SEGMENTS
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US3972179A
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Changeable display device
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DE2437474A1
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Hinged display element for flip-over calendar etc. - made of fabric reinforced epoxy resin
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CH585943A5
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Hinged display element for flip-over calendar etc. - made of fabric reinforced epoxy resin
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GB1162406A
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A System for Controlling the Frequency of Oscillation of a Clockwork Pendulum.
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CA825881A
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System for synchronizing a clockwork pendulum with a reference frequency
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