US3049873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust nozzle having a flow area of variable convergency and divergency
Assignee: Westinghouse Electric Corp
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Filing: 1958-02-04
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Granted: 1962-08-21
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Expires: 1978-02-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Norman E Weeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:05
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/09; F02K1/12; F02K1/1215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |