US3120932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet-balloon aircraft
Assignee: Individual
•
Filing: 1960-11-14
•
Granted: 1964-02-11
•
Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Stahmer Bernhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:50
CPC Classifications
B; B64; B64B; B64B1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US612808A
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US1677308A
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US1061484A
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US1274207A
Cited
US2444642A
Cited
US2693079A
Cited
US2690886A
Cited
US2879014A
Cited
US2988302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |