US2690273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevated storage tank
Assignee: Chicago Bridge and Iron Co
•
Filing: 1949-04-11
•
Granted: 1954-09-28
•
Expires: 1969-04-11
Abstract
No abstract record available.
Inventors
- 👤 Arne Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:58
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR454200A
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US1482541A
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FR574541A
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US1665827A
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US1915303A
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US1958421A
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US2062574A
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US2315453A
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US2264668A
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US2391120A
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US2341100A
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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) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |