US2943527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable tune producing instrumentality
Assignee: Individual
•
Filing: 1957-09-16
•
Granted: 1960-07-05
•
Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 John M Hanert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:19
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB411054A
Cited
US498561A
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US1392766A
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US1291202A
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GB355932A
Cited
US2020150A
Cited
FR808930A
Cited
US2117345A
Cited
US2153725A
Cited
US2227227A
Cited
US2265237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |