US3030977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure
Assignee: Inland Steel Co
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Filing: 1960-01-27
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Granted: 1962-04-24
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Expires: 1980-01-27
Abstract
No abstract record available.
Inventors
- 👤 Werner Tage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:42
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/21; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007; F16K1/2014; F16K1/2028; F16K1/2042; F16K1/2078; F16K49/00; F16K49/005; F16K49/007; F27B1/20; F27D; F27D3/00; F27D3/0025; F27D3/0032; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |