Patent US3455209A successfully refreshed from Google Patents.
US3455209A
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Hydraulic control circuit
Assignee: Eaton Corp
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Filing: 1967-02-23
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Granted: 1969-07-15
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 David S Preston
- 👤 Richard H Stroh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:09
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/40576; F15B2211/40584; F15B2211/415; F15B2211/41527; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5151; F15B2211/5153; F15B2211/52; F15B2211/528; F15B2211/55; F15B2211/60; F15B2211/615; F15B2211/635; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/72; F15B2211/80; F15B2211/86; F15B2211/863; F15B2211/8633; F15B2211/8636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |