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Ernest Alfred Allwood
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Debarking, Splitting, And Disintegration Of Timber
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Abstract
4068. Allwood, E. A. Feb. 24. Gramophones. - A gramophone needle is flattened at D and provided with one or more raised rims R on one or both sides of it surrounded by a fin or feather F. The flattened portion D may be cut away.
GB190804068D1908-02-241908-02-24Improvements in Needles for Sound-reproducing Instruments.
ExpiredGB190804068A
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