US2657533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control system
Assignee: Borg Warner Corp
•
Filing: 1951-03-26
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Granted: 1953-11-03
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Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Schanzlin
- 👤 Charles J Oster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:54
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/005; F15B7/006; B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/18; B64C25/22; F15B7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307839A
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US1912184A
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US2420622A
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US2417278A
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US2437791A
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US2437115A
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US2467508A
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US2467509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |