Nathan Airchime 'K' Horn Patent 1954 R.E Swanson

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Hron Bowler Australia
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Nathan Airchime 'K' Horn Patent 1954 R.E Swanson

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Nathan Airchime Kettledrum 'K' horn patent. Filed 1954 by Robert. E. Swanson of Airchime.
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US2884892 K horn mechanism.pdf
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