US2424927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air heating and humidifying apparatus
Assignee: Individual
•
Filing: 1945-10-08
•
Granted: 1947-07-29
•
Expires: 1965-10-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Garvey
- 👤 Paul V Scally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:51
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350452A
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US459395A
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US708373A
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US1574656A
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US1779714A
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US1791314A
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US1953302A
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US2029208A
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US2158294A
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US2276093A
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US2234869A
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US2387437A
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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) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |