US2452453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stoker provided with a metering control to determine fuel and air feed
Assignee: STOK A FIRE Co Inc
•
Filing: 1945-04-16
•
Granted: 1948-10-26
•
Expires: 1965-04-16
Abstract
No abstract record available.
Inventors
- 👤 Roy F Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:44
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/10; F23K3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1753050A
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US1867573A
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US1830798A
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US2020026A
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US2127933A
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US2149184A
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US2055725A
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US2141711A
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US2127018A
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US2321389A
Cited
US2354517A
Cited
US2343707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |