US3144800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pianofortes
Assignee: Crown Foundry Co Ltd
•
Filing: 1961-06-12
•
Granted: 1964-08-18
•
Expires: 1981-06-12
Abstract
No abstract record available.
Inventors
- 👤 John A Salmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PIANOFORTE COMPRISING A UNITARY INTEGRAL MOULDING OF REINFORCED PLASTIC CONSTITUTING THE FRAME AND THE TOP, BOTTOM AND SIDES OF THE CASE OF THE PIANOFORTE.
Claim 2
Dependent Claim
25 words
A PIANOFORTE COMPRISING A UNITARY INTEGRAL MOULDING OF REINFORCED PLASTIC CONSTITUTING THE FRAME AND THE TOP, BOTTOM AND SIDES OF THE CASE OF THE PIANOFORTE.
References Cited (Backward Citations)
US1881229A
Cited
US1980483A
Cited
US2474599A
Cited
US2505803A
Cited
US2532070A
Cited
US2600910A
Cited
US2858723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |