Patent US2994524A successfully refreshed from Google Patents.
US2994524A
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US
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Means for storing mechanical energy
Assignee: Individual
•
Filing: 1959-07-06
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Granted: 1961-08-01
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Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Jarret Jean
- 👤 Jarret Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:49
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/42; F16F1/44; F16F1/445; F16F2236/00; F16F2236/04; F16F2236/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1555214A
Cited
GB695195A
Cited
US2686155A
Cited
US2668049A
Cited
US2778426A
Cited
US2846211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |