Patent US2913218A successfully refreshed from Google Patents.
US2913218A
Expired / Lapsed
US
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Valve construction
Assignee: IDAHO MARYLAND MINES Corp
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Filing: 1957-05-06
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Granted: 1959-11-17
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Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 Albert F Broz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:55
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/228; F16K1/2285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB114152A
Cited
FR639043A
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US2059656A
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US2586927A
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US2529572A
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US2661182A
Cited
US2655942A
Cited
US2789785A
Cited
GB759111A
Cited
GB753860A
Cited
GB764946A
Cited
GB781183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |