Patent US2841167A successfully refreshed from Google Patents.
US2841167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball type shut-off valve
Assignee: Gulf Research and Development Co
•
Filing: 1953-07-27
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Granted: 1958-07-01
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Eugene W Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:17
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB459662A
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US1115256A
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US1461439A
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GB189408691A
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US682838A
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US994268A
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US1182166A
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US1721204A
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DE580427C
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US1693676A
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US1822682A
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US2643679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |