Patent US2959836A successfully refreshed from Google Patents.
US2959836A
Expired / Lapsed
US
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Tunnel kiln cooling section
Assignee: Individual
•
Filing: 1956-07-12
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Granted: 1960-11-15
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Expires: 1976-07-12
Abstract
No abstract record available.
Inventors
- 👤 William L Hanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:39
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/3005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1510556A
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US1556208A
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US1505768A
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US1701223A
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US1918962A
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US2203182A
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US2335128A
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US2550807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |