Patent US3512764A successfully refreshed from Google Patents.
US3512764A
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Rotary kiln having planetary cooling tubes
Assignee: FLSmidth and Co AS
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Filing: 1968-06-06
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Granted: 1970-05-19
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Expires: 1988-06-06
Abstract
No abstract record available.
Inventors
- 👤 Flemming Edvin Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:21
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/18; F27; F27B; F27B7/00; F27B7/20; F27B7/38; F27B7/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1652168A
Cited
US1830959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |