US2777512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas igniter for pulverized coal burners
Assignee: Babcock and Wilcox Co
•
Filing: 1952-07-14
•
Granted: 1957-01-15
•
Expires: 1972-07-14
Abstract
No abstract record available.
Inventors
- 👤 Lowell E Johnson
- 👤 Musat George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
F; F23; F23C; F23C99/00; F23Q; F23Q13/00; F23Q3/00; F23Q3/008; F23C2700/00; F23C2700/06; F23C2700/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1735629A
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FR526349A
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US1948663A
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US1841463A
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US2102588A
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US2263170A
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US2319351A
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US2402763A
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US2417981A
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US2480230A
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US2397793A
Cited
GB610672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |