DE529927C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for facilitating the playing of keyboard instruments
Assignee: Individual
•
Filing: 1928-12-19
•
Granted: 1931-07-18
•
Expires: 1948-12-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 20:18
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/02; G10; G10G; G10G1/00; G10G1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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