US2050773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for electric fans
Assignee: Individual
•
Filing: 1935-12-19
•
Granted: 1936-08-11
•
Expires: 1955-12-19
Abstract
No abstract record available.
Inventors
- 👤 Wall James Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:39
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/0035; F24F6/00; F24F6/02; F24F6/06; F24F7/00; F24F7/007; F24F8/00; F24F8/50; Y; Y02; Y02B; Y02B30/00; Y02B30/54
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) | 1939-08-11 | 1940-02-10 | 1940-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-11 | 1944-02-10 | 1944-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-11 | 1948-02-10 | 1948-08-11 | $7700.00 | Window Closed / Lapsed |