US2849185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating system
Assignee: ITT Bell and Gossett Inc
•
Filing: 1953-12-08
•
Granted: 1958-08-26
•
Expires: 1973-12-08
Abstract
No abstract record available.
Inventors
- 👤 Keyes Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:54
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1006; F24D19/1009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US751854A
Cited
US1358073A
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US1883243A
Cited
US1919330A
Cited
GB417464A
Cited
US2070433A
Cited
DE684535C
Cited
US2208272A
Cited
US2297706A
Cited
US2322872A
Cited
US2626755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |