Patent US3007690A successfully refreshed from Google Patents.
US3007690A
Expired / Lapsed
US
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Self-sealing rotary kiln
Assignee: Chemical Construction Corp
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Filing: 1960-02-03
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Granted: 1961-11-07
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Expires: 1980-02-03
Abstract
No abstract record available.
Inventors
- 👤 Koniewiez Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:24
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/02; B; B01; B01F; B01F29/00; B01F29/25; B01F29/251; B01F29/252; B01F29/60; B01F29/63; B01F35/00; B01F35/71; B01F35/717; B01F35/71775; B01F35/75; B01F35/754; B01F35/75455; B01F35/754551; F27B2007/027; F27B7/20; F27B7/32; F27B7/3205; F27B2007/3247; F27B2007/3252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US789691A
Cited
US970705A
Cited
US1475361A
Cited
US2109449A
Cited
US2069164A
Cited
US2743918A
Cited
US2932557A
Cited
US2972818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |