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US2859010A
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Actuator for gate valve
Assignee: Gulf Oil Corp
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Filing: 1955-05-18
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Granted: 1958-11-04
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Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 James G Ferrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:31
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/16; E21B34/02; F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/1221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1284662A
Cited
US1743367A
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US2417353A
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US2661766A
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US2664107A
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US2573993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |