US2686023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft ski
Assignee: Individual
•
Filing: 1952-02-29
•
Granted: 1954-08-10
•
Expires: 1972-02-29
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:58
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619327A
Cited
US1023255A
Cited
US1294477A
Cited
GB136208A
Cited
FR542713A
Cited
US1817901A
Cited
US1893647A
Cited
US2533951A
Cited
US2574404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |