US3475013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary kiln and cooler operation
Assignee: FLSmidth and Co AS
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Filing: 1968-05-03
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Granted: 1969-10-28
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Expires: 1988-05-03
Abstract
No abstract record available.
Inventors
- 👤 Mogens H Fog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |