Patent US3423937A successfully refreshed from Google Patents.
US3423937A
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Hydraulic control system
Assignee: HAINES AND SHERMAN Ltd
•
Filing: 1966-10-17
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Granted: 1969-01-28
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Aubrey Hubert Wagstaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/30; B; B60; B60K; B60K26/00; B60K26/02; B60K26/04; D; D01; D01H; D01H7/00; D01H7/02; D01H7/52; D01H7/60; D01H7/602; F; F02; F02D; F02D11/00; F02D11/06; F15; F15B; F15B7/00; F15B7/06; F15B7/08; F16; F16D; F16D25/00; F16D25/08; F16D2025/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1885121A
Cited
US2068626A
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US2164475A
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GB559844A
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US2798507A
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US2706020A
Cited
US2966929A
Cited
FR1229853A
Cited
US2966328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |