US2947321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trap for catch basins
Assignee: Individual
•
Filing: 1956-04-16
•
Granted: 1960-08-02
•
Expires: 1976-04-16
Abstract
No abstract record available.
Inventors
- 👤 Kovalcik Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:49
CPC Classifications
E; E03; E03F; E03F7/00; E03F7/02; E03F7/04; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7898; Y10T137/7902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US274204A
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US629449A
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US711457A
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US814788A
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US992954A
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US1119909A
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US1233391A
Cited
US1152611A
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US1510033A
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US1837658A
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US2661019A
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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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |