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US3398673A
Expired / Lapsed
US
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Clarifier
Assignee: THOMAS G KOPLOCK
•
Filing: 1965-10-24
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Granted: 1968-08-27
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Koplock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:55
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46; A; A47; A47J; A47J37/00; A47J37/12; A47J37/1223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1938934A
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US2029611A
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US2227344A
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US2287396A
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US2578129A
Cited
US2814389A
Cited
US3097589A
Cited
US3063259A
Cited
US3159095A
Cited
US3280722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |