US2806466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifying system
Assignee: Individual
•
Filing: 1954-04-16
•
Granted: 1957-09-17
•
Expires: 1974-04-16
Abstract
No abstract record available.
Inventors
- 👤 Albion J Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:37
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US283025A
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US2430890A
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US716380A
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US1515490A
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US1692816A
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US2133599A
Cited
US2187778A
Cited
US2303948A
Cited
US2503002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |