US2430446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generator
Assignee: Foster Wheeler Inc
•
Filing: 1943-06-11
•
Granted: 1947-11-11
•
Expires: 1963-06-11
Abstract
No abstract record available.
Inventors
- 👤 Blizard John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:16
CPC Classifications
F; F22; F22B; F22B31/00; F22B31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2167545A
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US2182782A
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US2231016A
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US2299732A
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US2182783A
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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) | 1950-11-10 | 1951-05-12 | 1951-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-10 | 1955-05-12 | 1955-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-10 | 1959-05-12 | 1959-11-11 | $7700.00 | Window Closed / Lapsed |