Patent US2834484A successfully refreshed from Google Patents.
US2834484A
Expired / Lapsed
US
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Apparatus for charging furnace having rectangular mouth
Assignee: Erie Mining Co
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Filing: 1954-06-21
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Granted: 1958-05-13
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Vaney Fred D De
- 👤 Beggs Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:24
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; F; F27; F27D; F27D3/00; F27D3/06; C21B7/20; F27B; F27B1/00; F27B1/10; F27B1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |