US2689017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface drain
Assignee: J A ZURN Manufacturing Co
•
Filing: 1951-06-02
•
Granted: 1954-09-14
•
Expires: 1971-06-02
Abstract
No abstract record available.
Inventors
- 👤 John H Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/0404; E04D13/0409; E04D2013/0427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1375222A
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US1577464A
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US1830065A
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US1991772A
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US2142343A
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US2119923A
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US2246390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |