US2928242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-combustion chamber gas turbine with rotary valving
Assignee: Phillips Petroleum Co
•
Filing: 1954-12-16
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Granted: 1960-03-15
•
Expires: 1974-12-16
Abstract
No abstract record available.
Inventors
- 👤 Guenther Emmerich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:31
CPC Classifications
F; F02; F02C; F02C5/00; F02C5/12; F23; F23R; F23R7/00; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE384532C
Cited
DE387166C
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DE469674C
Cited
GB619173A
Cited
US2631430A
Cited
US2579321A
Cited
US2659198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |