US3429217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Music-note indicator
Assignee: SIDNEY J LAWRENCE
•
Filing: 1967-07-03
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Granted: 1969-02-25
•
Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Sidney J Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
G; G09; G09B; G09B15/00; G09B15/02; G09B15/04; G10; G10G; G10G1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US373069A
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FR442572A
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GB442226A
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US2353001A
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US2583813A
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CH325498A
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US2783327A
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US3308253A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |