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Patent US2640629A successfully refreshed from Google Patents.
US2640629A
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Fuel feeding apparatus with vibratory hopper
Assignee: Foster Wheeler Inc
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Filing: 1947-01-25
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Granted: 1953-06-02
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Expires: 1967-01-25
Abstract
No abstract record available.
Inventors
- 👤 Thomson Hugh Mcdonald
- 👤 Mudie Charles Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:16
CPC Classifications
F; F23; F23K; F23K3/00; F23K2203/00; F23K2203/004; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US778479A
Cited
US1360798A
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US2104930A
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US2079364A
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US2248725A
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US2240030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |