Patent US3446176A successfully refreshed from Google Patents.
US3446176A
Expired / Lapsed
US
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Amphibious crossing equipments
Assignee: Ministère des Armées
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Filing: 1967-04-05
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Granted: 1969-05-27
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Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Bernard Grange
- 👤 Charles-Jean Long
- 👤 Bernard Jugue
- 👤 Roger Mallet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
E; E01; E01D; E01D15/00; E01D15/14; E01D15/22; B; B60; B60F; B60F3/00; B60F3/0061
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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |