US3376738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic refill and temperature compensation device for hydraulic systems
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1965-06-28
•
Granted: 1968-04-09
•
Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Joe L Biffle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:41
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/06; F15B7/10; F15B21/00; F15B21/04; F15B21/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US288728A
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US1560685A
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US2107883A
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US2172095A
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US2700302A
Cited
US3074272A
Cited
US3178937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |