US2991773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-piston machines
Assignee: Automobiles Citroen SA
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Filing: 1959-06-29
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Granted: 1961-07-11
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Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Cadiou Jean Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:17
CPC Classifications
F; F01; F01B; F01B11/00; F02; F02B; F02B71/00; F02B71/04; F02C; F02C5/00; F02C5/06; F02C5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |