Patent US2969644A successfully refreshed from Google Patents.
US2969644A
Expired / Lapsed
US
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Drive means for a regenerator in a reexpansion gas turbine engine
Assignee: Williams International Corp
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Filing: 1956-12-12
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Granted: 1961-01-31
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Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Sam B Williams
- 👤 Jack J Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:18
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/08; F02C7/10; F02C7/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US448874A
Cited
US2173489A
Cited
GB595357A
Cited
US2632626A
Cited
US2665549A
Cited
US2707865A
Cited
US2804747A
Cited
US2795928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |