US2535772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier
Assignee: Individual
•
Filing: 1946-03-04
•
Granted: 1950-12-26
•
Expires: 1966-03-04
Abstract
No abstract record available.
Inventors
- 👤 William J Woolley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:55
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/008; F24D19/0082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US750582A
Cited
US903250A
Cited
US1132009A
Cited
US1229434A
Cited
US1365284A
Cited
US1981365A
Cited
US2073915A
Cited
US2112211A
Cited
US2111437A
Cited
US2395512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |