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Frederick Franz

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Details Frederick Franz Frederick Franz

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: Inventor

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Commercial phonograph

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Crochet needle

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Electric metronome

G - Physics – 04 – F

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Escapement

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Grinding device for glass plates

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Electric metronome

G - Physics – 04 – F

[ 0.00 ] – not rated yet Voters 0 Comments 0

Grinding device for glass plates

[ 0.00 ] – not rated yet Voters 0 Comments 0

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Profile ID: LFCA-PAI-P-88901

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