Patent US2175869A successfully refreshed from Google Patents.
US2640322A
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Hydraulic steering mechanism
Assignee: SHALLCROSS CONTROLS Inc
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Filing: 1951-01-02
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Granted: 1953-06-02
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Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Erving A Puerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1890041A
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US1952034A
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US2020951A
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US2274734A
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US2432502A
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US2354992A
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US2465761A
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US2554843A
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US2511660A
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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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |