US2748944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner sweeping means for clarification basins
Assignee: Infilco Inc
•
Filing: 1954-05-03
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Granted: 1956-06-05
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Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 Anton A Kalinske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0024; B01D21/0003; B01D21/0006; B01D21/24; B01D21/2405; B01D21/245; B01D21/2472; Y; Y10; Y10S; Y10S239/00; Y10S239/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1141503A
Cited
US1457794A
Cited
US2238024A
Cited
US2348123A
Cited
US2518570A
Cited
US2525842A
Cited
US2673181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |