Patent US2942866A successfully refreshed from Google Patents.
US2942866A
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Apparatus for distributing wind from a plurality of turbine driven blowers to the bustle pipes of a plurality of blast furnaces
Assignee: Hagan Chemicals and Controls Inc
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Filing: 1957-06-03
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Granted: 1960-06-28
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Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 George R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:02
CPC Classifications
C; C21; C21B; C21B5/00; F; F23; F23N; F23N3/00; F23N3/08; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20473E
Cited
US2243944A
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US1662851A
Cited
US1879575A
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DE563008C
Cited
US2192885A
Cited
US2689780A
Cited
US2677385A
Cited
GB729563A
Cited
US2774368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |