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Patents > Filing date: 1909 & IPCs : IPC B63H1/12 or IPC B64B1/00

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None (5) · Johann Schütte (4) · Theodor Zorn (3) · Hermann Ruthenberg (2) · Friedrich von Ehrenberg (2) · Joel Trout Rice (2) · Antoine-Padoue Filippi (2)
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None (9) · Johann Schütte (4) · Theodor Zorn (3) · Hermann Ruthenberg (2) · Friedrich von Ehrenberg (2) · Joel Trout Rice (2) · Antoine-Padoue Filippi (2)
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None (14)
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