Patent US3545880A successfully refreshed from Google Patents.
US3545880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for rotary-wing aircraft
Assignee: SUD AVIAT SOC NATIONALE DE CON
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Filing: 1968-07-23
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Granted: 1970-12-08
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Expires: 1988-07-23
Abstract
No abstract record available.
Inventors
- 👤 Rene Louis Mouille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:11
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/327; B64C27/37; B64C27/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB247938A
Cited
US2810443A
Cited
GB751109A
Cited
US2919758A
Cited
US2961051A
Cited
US3026942A
Cited
US3310119A
Cited
US3254724A
Cited
US3297094A
Cited
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 |