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Patent US2969653A successfully refreshed from Google Patents.
US2969653A
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Auxiliary power systems associated with aircraft turbines
Assignee: GE Healthcare UK Ltd
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Filing: 1959-12-03
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Granted: 1961-01-31
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Expires: 1979-12-03
Abstract
No abstract record available.
Inventors
- 👤 Trowbridge David Roy
- 👤 Moss Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:28
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/04; F02C6/06; F02C6/08; B; B64; B64D; B64D13/00; B64D13/02; B64D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2632307A
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 |