US2670185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus provided with thermal compensating device
Assignee: MAN AG
•
Filing: 1950-06-13
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Granted: 1954-02-23
•
Expires: 1970-06-13
Abstract
No abstract record available.
Inventors
- 👤 Schorner Christian
- 👤 Rothemund Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F28D7/1607; F02; F02C; F02C7/00; F02C7/08; F28F; F28F2265/00; F28F2265/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL29646C
Cited
US553509A
Cited
GB189904109A
Cited
GB273605A
Cited
US1626869A
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US1780837A
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US1884209A
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US2232936A
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US2506293A
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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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |