Patent US2523354A successfully refreshed from Google Patents.
US4418388B1
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Engine waveford pattern analyzer
Assignee: SPX Technologies Inc
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Filing: 1980-08-14
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Granted: 1998-08-25
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Expires: 2000-08-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Allgor
- 👤 St Clair J Clair
- 👤 Richard A Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:50
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/10; G; G01; G01M; G01M15/00; G01M15/04; G01M15/05; G01R; G01R31/00; G01R31/005; G01R31/006; G01R31/007; F02B; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
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) | 2001-08-24 | 2002-02-23 | 2002-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-24 | 2006-02-23 | 2006-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-24 | 2010-02-23 | 2010-08-25 | $7700.00 | Window Closed / Lapsed |