US2323231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the production of music
Assignee: Miessner Inventions Inc
•
Filing: 1941-12-15
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Granted: 1943-06-29
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Expires: 1961-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick D Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:04
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/0091; Y; Y10; Y10S; Y10S84/00; Y10S84/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-06-28 | 1946-12-28 | 1947-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-28 | 1950-12-28 | 1951-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-28 | 1954-12-28 | 1955-06-29 | $7700.00 | Window Closed / Lapsed |