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US3185437A
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US
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Non-corrosive valve
Assignee: Rice Engineering and Operating Inc
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Filing: 1962-11-30
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Granted: 1965-05-25
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Ivan M Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:34
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2755118A
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US2790661A
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US2951721A
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US3006597A
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US2967539A
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US3004783A
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US2973183A
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US3026899A
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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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |