Patent US3412683A successfully refreshed from Google Patents.
US3412683A
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US
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Hydraulic system control
Assignee: Ulrich Manufacturing Co
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Filing: 1966-08-25
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Granted: 1968-11-26
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Expires: 1986-08-25
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:32
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F04; F04B; F04B49/00; F04B49/002; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20546; F15B2211/20553; F15B2211/20576; F15B2211/25; F15B2211/251; F15B2211/255; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/315; F15B2211/31523; F15B2211/31535; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5151; F15B2211/55; F15B2211/60; F15B2211/605; F15B2211/6051; F15B2211/61; F15B2211/613; F15B2211/635; F15B2211/6355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2977979A
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US3161137A
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US3302585A
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US3234889A
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US3236049A
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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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |