US2988327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency power systems for aircraft auxiliary apparatus
Assignee: GE Healthcare UK Ltd
•
Filing: 1957-01-28
•
Granted: 1961-06-13
•
Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Trowbridge David Roy
- 👤 Nunn George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:52
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16; F01; F01D; F01D9/00; F01D9/02; F01D9/04; B; B64; B64D; B64D41/00; B64D41/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329567A
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US752604A
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US796395A
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GB479889A
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US2412365A
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US2610464A
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US2715367A
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US2689680A
Cited
US2754049A
Cited
US2694979A
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US2752858A
Cited
US2815188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |