US2654362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier
Assignee: Individual
•
Filing: 1950-04-05
•
Granted: 1953-10-06
•
Expires: 1970-04-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Scharf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:05
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1208409A
Cited
US1557618A
Cited
US1555565A
Cited
US1641587A
Cited
US2247707A
Cited
US2292407A
Cited
US2427359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |