Patent US2427329A successfully refreshed from Google Patents.
US2427329A
Expired / Lapsed
US
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Central tuyere for stokers
Assignee: Iron Fireman Manufacturing Co
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Filing: 1944-07-17
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Granted: 1947-09-09
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Expires: 1964-07-17
Abstract
No abstract record available.
Inventors
- 👤 William M Schweickart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:17
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/10; F23K3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR741005A
Cited
US712467A
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US717634A
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US1844042A
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US1886577A
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US1729776A
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US2119937A
Cited
FR740059A
Cited
FR777308A
Cited
US2201780A
Cited
US2405982A
Cited
US2353087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |