US2818191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical segmental vessel for external pressure
Assignee: Chicago Bridge and Iron Co
•
Filing: 1953-10-05
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Granted: 1957-12-31
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Expires: 1973-10-05
Abstract
No abstract record available.
Inventors
- 👤 Arne Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:10
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/02; F17C1/08; B; B65; B65D; B65D90/00; B65D90/02; B65D90/023; B65D90/025; F17C2201/00; F17C2201/01; F17C2201/0147; F17C2201/0152; F17C2201/05; F17C2201/052; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/013; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0614; F17C2203/0617; F17C2203/0634; F17C2203/0636; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/018; F17C2209/00; F17C2209/22; F17C2209/221; F17C2209/228; F17C2221/00; F17C2221/03; F17C2221/031; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/03; F17C2223/038; F17C2270/00; F17C2270/01; F17C2270/0134; F17C2270/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB158024A
Cited
US1686931A
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US1844854A
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US2094589A
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US2408105A
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US2354691A
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US2457118A
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US2380089A
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US2516100A
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US2668634A
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US2673001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |