US2825923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for soot blowers of the puff type
Assignee: Diamond Power Specialty Corp
•
Filing: 1952-02-21
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Granted: 1958-03-11
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Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Mart Le Roy S De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:30
CPC Classifications
F; F23; F23J; F23J3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1991968A
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US2049421A
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US2493656A
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US2553044A
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GB431852A
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GB504917A
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US2240079A
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US2303152A
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US2327524A
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US2462614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |