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Keyboard for a quarter-tone keyboard instrument

Assignee: AUGUST FOERSTER FA
•
Filing: 1924-03-18
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Granted: 1925-09-03
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Expires: 1944-03-18
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Abstract

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Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-11-06 13:44
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/12

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