US2828939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support of turbine casings and other structure
Assignee: Power Jets Research and Development Ltd
•
Filing: 1951-09-10
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Granted: 1958-04-01
•
Expires: 1971-09-10
Abstract
No abstract record available.
Inventors
- 👤 Grey John Constantine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:55
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR955996A
Cited
US1670452A
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FR583713A
Cited
FR648175A
Cited
US1873743A
Cited
US1969556A
Cited
GB492085A
Cited
US2481547A
Cited
US2529958A
Cited
US2587345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |