Patent US3280686A successfully refreshed from Google Patents.
US3280686A
Expired / Lapsed
US
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Piano action
Assignee: Wurlitzer Co
•
Filing: 1959-07-20
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Granted: 1966-10-25
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Expires: 1979-07-20
Abstract
No abstract record available.
Inventors
- 👤 Clifford W Andersen
- 👤 Charles S Corey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:48
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/16; G10C3/161; G10C3/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN A PIANO ACTION, THE COMBINATION COMPRISING: A PIANO KEY; A KEYFORK DRIVEN INTO THE VERTICAL END FACE OF SAID KEY; A GROMMET ADAPTED TO ENGAGE SAID KEYFORK; A SCREW; AND A STICKER SECURED TO SAID KEYFORK BY SAID SCREW AND SAID GROMMET.
Claim 2
Dependent Claim
43 words
IN A PIANO ACTION, THE COMBINATION COMPRISING: A PIANO KEY; A KEYFORK DRIVEN INTO THE VERTICAL END FACE OF SAID KEY; A GROMMET ADAPTED TO ENGAGE SAID KEYFORK; A SCREW; AND A STICKER SECURED TO SAID KEYFORK BY SAID SCREW AND SAID GROMMET.
References Cited (Backward Citations)
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US2061154A
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US2156963A
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US2260348A
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US2324037A
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US2548890A
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US2761345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |