US3401767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated ground effect machine system
Assignee: Bell Aerospace Corp
•
Filing: 1967-03-17
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Granted: 1968-09-17
•
Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Barr Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:07
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3106260A
Cited
US3185238A
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US3282359A
Cited
US3185240A
Cited
US3244247A
Cited
US3369623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |