Patent US4796969A successfully refreshed from Google Patents.
Patent US2687615A successfully refreshed from Google Patents.
US2687615A
Expired / Lapsed
US
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Radial type hydraulic pump
Assignee: SHALLCROSS CONTROLS Inc
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Filing: 1952-02-21
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Granted: 1954-08-31
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Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 John A Morrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/10; F04B1/107; F04B1/1071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1641509A
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US1738375A
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US2137448A
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GB492463A
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US2335284A
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US2454563A
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US2545238A
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US2461235A
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US2528739A
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US2599609A
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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) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |