US2494070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for burning pulverized fuel
Assignee: Blaw Knox Co
•
Filing: 1945-09-10
•
Granted: 1950-01-10
•
Expires: 1965-09-10
Abstract
No abstract record available.
Inventors
- 👤 William A Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:21
CPC Classifications
F; F23; F23K; F23K3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US616455A
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US888787A
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US1265172A
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US1535903A
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US1566177A
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US2053340A
Cited
US1914828A
Cited
US1834768A
Cited
US1961043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |