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Patent US2898978A successfully refreshed from Google Patents.
US2898978A
Expired / Lapsed
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Gaseous fuel combustion apparatus
Assignee: LUCAS ROTAX Ltd
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Filing: 1957-02-19
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Granted: 1959-08-11
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Expires: 1977-02-19
Abstract
No abstract record available.
Inventors
- 👤 Kitchen John Alfred
- 👤 Denham Frederick Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:49
CPC Classifications
F; F23; F23C; F23C15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2763983A
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US2561194A
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US2717637A
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US2632294A
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US2657708A
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US2653654A
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US2719580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |