Patent US2599779A successfully refreshed from Google Patents.
US2599779A
Expired / Lapsed
US
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Electric furnace
Assignee: Individual
•
Filing: 1949-12-28
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Granted: 1952-06-10
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Expires: 1969-12-28
Abstract
No abstract record available.
Inventors
- 👤 Rajtora Vaclav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:15
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02; F27D11/04; B; B01; B01J; B01J3/00; B01J3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1130940A
Cited
US1177680A
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US1056045A
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US1203276A
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US1680630A
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GB405361A
Cited
US2244267A
Cited
US2215982A
Cited
US2303973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |