Patent US2548086A successfully refreshed from Google Patents.
US2548086A
Expired / Lapsed
US
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Gas producer, including rotatable ash breaking grate means
Assignee: Wests Gas Improvement Co Ltd
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Filing: 1947-06-24
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Granted: 1951-04-10
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Expires: 1967-06-24
Abstract
No abstract record available.
Inventors
- 👤 West Frederick Joseph
- 👤 West Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:17
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/34; C10J3/40; C10J3/42; C10J2200/00; C10J2200/09; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0943
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US337849A
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US386665A
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US666517A
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US856137A
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US1645671A
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US1709107A
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US2289347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |