US2659326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof for tilting furnaces
Assignee: Veitscher Magnesitwerke AG
•
Filing: 1947-07-23
•
Granted: 1953-11-17
•
Expires: 1967-07-23
Abstract
No abstract record available.
Inventors
- 👤 Honig Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/02; F27D1/025; F27D1/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US403152A
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US1601485A
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US1158776A
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US1214066A
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US1266745A
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US1440446A
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US1549583A
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US1516604A
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US1582275A
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GB313175A
Cited
US2222978A
Cited
FR874846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |