US3545701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift or lift/propulsion system for aircraft
Assignee: Bertin Technologies SAS
•
Filing: 1968-05-24
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Granted: 1970-12-08
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Expires: 1988-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jean Henri Bertin
- 👤 Marcel Pierre Le Nabour
- 👤 Jean Lucien Charles Cayla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:21
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/005; B64C23/00; B64C23/005; B64C9/00; B64C9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |