US2660410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: ITT Bell and Gossett Inc
•
Filing: 1949-11-29
•
Granted: 1953-11-24
•
Expires: 1969-11-29
Abstract
No abstract record available.
Inventors
- 👤 Maurice H Hofmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:55
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/48; F24H1/52; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1104776A
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US1425273A
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US1602287A
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US2007309A
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US2088931A
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US2221469A
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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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |