Patent US3212480A successfully refreshed from Google Patents.
US3212480A
Expired / Lapsed
US
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Cooling of radiant furnace tube supports
Assignee: Phillips Petroleum Co
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Filing: 1963-06-10
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Granted: 1965-10-19
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Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Oliver M Surber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:52
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1622303A
Cited
US2079191A
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US2270863A
Cited
US2355800A
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US2348181A
Cited
US2355892A
Cited
US2716968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |