US2225349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating fan control
Assignee: General Electric Co
•
Filing: 1939-02-01
•
Granted: 1940-12-17
•
Expires: 1959-02-01
Abstract
No abstract record available.
Inventors
- 👤 Harold F Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/007; F24F7/013; Y; Y10; Y10S; Y10S55/00; Y10S55/36; Y10T; Y10T24/00; Y10T24/39; Y10T24/3902; Y10T24/3904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-17 | 1944-06-17 | 1944-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-17 | 1948-06-17 | 1948-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-17 | 1952-06-17 | 1952-12-17 | $7700.00 | Window Closed / Lapsed |