US3519720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organ having variable timbre with transistorized player controlled dynamic filter
Assignee: Baldwin Piano and Organ Co
•
Filing: 1968-04-24
•
Granted: 1970-07-07
•
Expires: 1988-04-24
Abstract
No abstract record available.
Inventors
- 👤 David A Bunger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:01
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24743E
Cited
US3098077A
Cited
US2835814A
Cited
US3004460A
Cited
US3166622A
Cited
US3255296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |