US2529040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating fan for windows
Assignee: HACKLEY MORRISON JR
•
Filing: 1945-08-03
•
Granted: 1950-11-07
•
Expires: 1965-08-03
Abstract
No abstract record available.
Inventors
- 👤 Morrison Hackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1604448A
Cited
US1798282A
Cited
US2027647A
Cited
US1971827A
Cited
US1988810A
Cited
US2010808A
Cited
US2010809A
Cited
US2036851A
Cited
US2035653A
Cited
US2154410A
Cited
US2298606A
Cited
US2385152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |