US2510352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverberatory furnace for melting metals
Assignee: JOHN H EHARDT
•
Filing: 1946-04-25
•
Granted: 1950-06-06
•
Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Sklenar Wenzeslaw Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:30
CPC Classifications
F; F27; F27B; F27B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US403152A
Cited
US1420312A
Cited
US1266745A
Cited
US1344437A
Cited
US1376482A
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US1590373A
Cited
US1696794A
Cited
US1751675A
Cited
CH148540A
Cited
US1983927A
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US1900942A
Cited
GB370636A
Cited
US2065691A
Cited
US2139172A
Cited
US2182674A
Cited
GB562407A
Cited
US2414545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |