Patent US1096229A successfully refreshed from Google Patents.
Patent US1726995A successfully refreshed from Google Patents.
US1726995A
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Heat-exchange apparatus
Assignee: Foster Wheeler Inc
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Filing: 1928-10-26
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Granted: 1929-09-03
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Expires: 1948-10-26
Abstract
No abstract record available.
Inventors
- 👤 Sieder Everett Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:07
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0236; F28F9/0239; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1638; F28D7/1646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-09-02 | 1933-03-04 | 1933-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-02 | 1937-03-04 | 1937-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-02 | 1941-03-04 | 1941-09-03 | $7700.00 | Window Closed / Lapsed |