Patent US1251630A successfully refreshed from Google Patents.
Patent US5127602B1 successfully refreshed from Google Patents.
US5127602B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise reduction kit for jet turbine engines.
Assignee: Federal Express Corp
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Filing: 1989-11-21
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Granted: 1995-05-02
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Expires: 2009-11-21
Abstract
No abstract record available.
Inventors
- 👤 John G Batey
- 👤 Park W Burrets
- 👤 William F Grewe
- 👤 Bruce G Whitestone
- 👤 Mark D Yerger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:39
CPC Classifications
B; B64; B64D; B64D33/00; B64D33/04; B64D33/06; F; F02; F02K; F02K1/00; F02K1/38; F02K1/386; F02K1/78; F02K1/82; F02K1/827
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-05-01 | 1998-10-31 | 1999-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-01 | 2002-10-31 | 2003-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-01 | 2006-10-31 | 2007-05-02 | $7700.00 | Window Closed / Lapsed |