Patent US2723651A successfully refreshed from Google Patents.
US2723651A
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US
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Fluid heaters
Assignee: Foster Wheeler Inc
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Filing: 1952-02-18
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Granted: 1955-11-15
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Expires: 1972-02-18
Abstract
No abstract record available.
Inventors
- 👤 Bliss Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/02; C09C1/025; C09C1/027; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; F; F22; F22B; F22B21/00; F22B21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US505772A
Cited
US731300A
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US1599613A
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US2114269A
Cited
US2484385A
Cited
US2486481A
Cited
US2621635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |