US2671658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal lined cupola
Assignee: Meehanite Metal Corp
•
Filing: 1951-02-14
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Granted: 1954-03-09
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Expires: 1971-02-14
Abstract
No abstract record available.
Inventors
- 👤 Moore William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:43
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US205274A
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US320586A
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US452607A
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US499188A
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US651703A
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US1629045A
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US1740886A
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US1828293A
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US2225373A
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US2238036A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |