US2853269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valves
Assignee: Crane Process Flow Technologies Ltd
•
Filing: 1954-09-02
•
Granted: 1958-09-23
•
Expires: 1974-09-02
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Shand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/316
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US165493A
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US459408A
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GB189600405A
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US1801960A
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US1823394A
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US2013212A
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US2253881A
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US2370751A
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US2639117A
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US2516411A
Cited
GB671546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |