US3528250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bypass engine with afterburning and compressor bleed air heat exchanger in bypass duct
Assignee: Motors Liquidation Co
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Filing: 1969-04-16
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Granted: 1970-09-15
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Expires: 1989-04-16
Abstract
No abstract record available.
Inventors
- 👤 Douglas Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F28D7/1615; F02; F02C; F02C7/00; F02C7/12; F02C7/16; F02C7/18; F02C7/185; F02K; F02K3/00; F02K3/08; F02K3/105; F28D21/00; F28D2021/0019; F28D2021/0021; Y; Y02; Y02T; Y02T50/00; Y02T50/60
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) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |