Patent US3215542A successfully refreshed from Google Patents.
US3036737A
Expired / Lapsed
US
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Surge tank for feeding finely divided flocculent solids
Assignee: Phillips Petroleum Co
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Filing: 1959-02-24
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Granted: 1962-05-29
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 William R King
- 👤 Lawrence C Keaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:13
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/64; B65D88/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2650002A
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Cited
GB801304A
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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 |