US2607434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface drain
Assignee: Individual
•
Filing: 1946-02-23
•
Granted: 1952-08-19
•
Expires: 1966-02-23
Abstract
No abstract record available.
Inventors
- 👤 Martin A Sisk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:11
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/0404; E04D13/0409; B; B63; B63B; B63B5/00; B63B5/02; B63B5/06; E03; E03F; E03F5/00; E03F5/04; E03F5/0407; E03F5/0409; E04D2013/0413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1360630A
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US931019A
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US1348945A
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US1646994A
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US1434254A
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US1999277A
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US1972513A
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US2142343A
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US2101978A
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US2279683A
Cited
US2400070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |