US4780009B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4780009B1 - - Google Patents
Assignee: Combustion Engineering Inc
•
Filing: 1987-04-27
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Granted: 1991-08-13
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Expires: 2007-04-27
Abstract
No abstract record available.
Inventors
- 👤 L Crick David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:37
CPC Classifications
B; B41; B41F; B41F19/00; B44; B44B; B44B5/00; B44B5/0004; B44B5/0019; B41F17/00; B44B5/0061; B44B5/0095; F; F22; F22B; F22B37/00; F22B37/002; F22B37/003
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) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |