US2916706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio modulator
Assignee: BALDWIN PIANO Co
•
Filing: 1956-12-31
•
Granted: 1959-12-08
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Timperman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:22
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043; Y; Y10; Y10S; Y10S84/00; Y10S84/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898366A
Cited
US2024489A
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US2460790A
Cited
US2623200A
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US2714697A
Cited
US2778940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |