Patent US2846740A successfully refreshed from Google Patents.
US2846740A
Expired / Lapsed
US
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Furnace ladling apparatus
Assignee: Lindberg Engineering Co
•
Filing: 1956-09-17
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Granted: 1958-08-12
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Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Edstrand Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:35
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/14; F27B; F27B14/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US328570A
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DE583338C
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US1634482A
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DE430373C
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US1672728A
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DE571806C
Cited
DE687011C
Cited
US2774122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |