Patent US2689058A successfully refreshed from Google Patents.
US2689058A
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US
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Closure unit
Assignee: J A ZURN Manufacturing Co
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Filing: 1951-01-15
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Granted: 1954-09-14
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Expires: 1971-01-15
Abstract
No abstract record available.
Inventors
- 👤 John H Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:11
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/11; F16L55/1108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1566983A
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US1798491A
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US1911455A
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US1864957A
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US1972156A
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US2169312A
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US2191902A
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US2343235A
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US2371633A
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US2451599A
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US2537249A
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 |