US2983263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic supporting construction for heat transfer components
Assignee: National Beryllia Corp
•
Filing: 1957-05-24
•
Granted: 1961-05-09
•
Expires: 1977-05-24
Abstract
No abstract record available.
Inventors
- 👤 Christian E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:15
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1729181A
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US1852363A
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FR762462A
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US2036957A
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US2090345A
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US2149589A
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US2624301A
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US2779316A
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GB753103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |