Patent US3036716A successfully refreshed from Google Patents.
US3036716A
Expired / Lapsed
US
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Continuously operating sedimentation tanks
Assignee: Dorr Oliver Inc
•
Filing: 1959-05-15
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Granted: 1962-05-29
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Expires: 1979-05-15
Abstract
No abstract record available.
Inventors
- 👤 Charles A Schreiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:10
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B01D21/2427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE516055C
Cited
GB417473A
Cited
US2051149A
Cited
US2122385A
Cited
US2585006A
Cited
US2611489A
Cited
US2881923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |