US2621874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airborne vehicle and cushioning and/or buoyancy supporting means therefor
Assignee: Air Cruisers Co LLC
•
Filing: 1950-04-17
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Granted: 1952-12-16
•
Expires: 1970-04-17
Abstract
No abstract record available.
Inventors
- 👤 James F Boyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:15
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/54; B64C25/56; B64C35/00; B64C2025/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317741A
Cited
US1148340A
Cited
US2306269A
Cited
US2375973A
Cited
US2391326A
Cited
US2396212A
Cited
US2444264A
Cited
US2507913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |