Patent US2861715A successfully refreshed from Google Patents.
US2861715A
Expired / Lapsed
US
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Floating roof tank and cooling means therefor
Assignee: Chicago Bridge and Iron Co
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Filing: 1954-09-16
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Granted: 1958-11-25
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Expires: 1974-09-16
Abstract
No abstract record available.
Inventors
- 👤 Ivan L Wissmiller
- 👤 Lyle V Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:46
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34; B65D88/42; B65D88/74; B65D88/744; B65D88/745
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1575033A
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US1121057A
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US1415351A
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US1490782A
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US1545352A
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US1666415A
Cited
US1714207A
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US2689461A
Cited
US2497047A
Cited
US2706527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |