US3047008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: JR Clarkson Co LLC
•
Filing: 1957-05-24
•
Granted: 1962-07-31
•
Expires: 1977-05-24
Abstract
No abstract record available.
Inventors
- 👤 Clarkson John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/60; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE670327C
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US2430934A
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GB698188A
Cited
US2725211A
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US2715085A
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US2748461A
Cited
US2748042A
Cited
US2904063A
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US2876937A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |