Patent US2700376A successfully refreshed from Google Patents.
US2700376A
Expired / Lapsed
US
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Apparatus for purifying steam
Assignee: Foster Wheeler Inc
•
Filing: 1949-06-04
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Granted: 1955-01-25
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Expires: 1969-06-04
Abstract
No abstract record available.
Inventors
- 👤 Frisch Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:56
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/26; F22B37/30; F22B37/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL38431C
Cited
US520884A
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US973541A
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US661499A
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US1822151A
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US1981865A
Cited
US2256115A
Cited
US2320345A
Cited
US2368632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |