Patent DE406301C successfully refreshed from Google Patents.
DE406301C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Quarter-tone keyboard instrument
Assignee: GROTRIAN
•
Filing: 1923-11-07
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Granted: 1924-11-21
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Expires: 1943-11-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 18:27
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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