US2937013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water cooled deflectors used in fly ash suppression systems
Assignee: Individual
•
Filing: 1956-04-20
•
Granted: 1960-05-17
•
Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:05
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/18; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US809383A
Cited
US2032404A
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US2152251A
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US2147876A
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US2259626A
Cited
US2387345A
Cited
US2529045A
Cited
FI26504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |