US2544175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for trimming the finger plate on a piano key
Assignee: Individual
•
Filing: 1948-04-02
•
Granted: 1951-03-06
•
Expires: 1968-04-02
Abstract
No abstract record available.
Inventors
- 👤 Herbert D Oslund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:36
CPC Classifications
B; B27; B27B; B27B5/00; B27B5/16; B27B5/22; B27B5/26; B27M; B27M3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/44; Y10T83/00; Y10T83/647; Y10T83/654; Y10T83/6542
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US32871A
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US40274A
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US363016A
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US417216A
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US881064A
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US1493566A
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US2005100A
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US2085236A
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US2273715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |