US1935120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan
Assignee: BF Sturtevant Co
•
Filing: 1929-10-31
•
Granted: 1933-11-14
•
Expires: 1949-10-31
Abstract
No abstract record available.
Inventors
- 👤 Harold F Hagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:30
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F04D27/00; F04D27/009; F04D29/4206; F04D29/4213; F23; F23L; F23L17/00; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/51; F23L2700/00; F23L2700/001
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) | 1936-11-13 | 1937-05-15 | 1937-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-13 | 1941-05-15 | 1941-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-13 | 1945-05-15 | 1945-11-14 | $7700.00 | Window Closed / Lapsed |