Patent US2536086A successfully refreshed from Google Patents.
US2536086A
Expired / Lapsed
US
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Ejection seat for high-velocity airplanes
Assignee: Individual
•
Filing: 1949-10-07
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Granted: 1951-01-02
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Expires: 1969-10-07
Abstract
No abstract record available.
Inventors
- 👤 Edmund S Pomykala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:50
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/08; B64D25/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317511A
Cited
FR458480A
Cited
US1254947A
Cited
US1672163A
Cited
US1949304A
Cited
US2476770A
Cited
US2467763A
Cited
GB609456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |