Patent US3385169A successfully refreshed from Google Patents.
US3385169A
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Hydraulic system for maintaining the position of a fluid motor
Assignee: AT&T Inc
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Filing: 1965-09-30
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Granted: 1968-05-28
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Albert L Hale
- 👤 Francis A Reidy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:13
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/315; F15B2211/31523; F15B2211/31529; F15B2211/31552; F15B2211/31558; F15B2211/32; F15B2211/329; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/40576; F15B2211/40584; F15B2211/415; F15B2211/41527; F15B2211/41581; F15B2211/42; F15B2211/421; F15B2211/60; F15B2211/625; F15B2211/70; F15B2211/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3122992A
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US1881185A
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US2752754A
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US2721446A
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US2775255A
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US3015345A
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US3064687A
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US2940263A
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US3058448A
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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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |