Patent US3052990A successfully refreshed from Google Patents.
US3052990A
Expired / Lapsed
US
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Method and apparatus for solids contacting
Assignee: Individual
•
Filing: 1959-06-17
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Granted: 1962-09-11
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Expires: 1979-06-17
Abstract
No abstract record available.
Inventors
- 👤 John P Tailor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:52
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2866625A
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US2568749A
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US2621113A
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US2433726A
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US2561394A
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US2471084A
Cited
US2509751A
Cited
US2523126A
Cited
US2671102A
Cited
DE1008715B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |