Patent US2654529A successfully refreshed from Google Patents.
US2654529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary fan or the like
Assignee: Individual
•
Filing: 1948-11-12
•
Granted: 1953-10-06
•
Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Smith William Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:08
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/082; F04D29/00; F04D29/58; F04D29/5806; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US919623A
Cited
US886515A
Cited
US1023873A
Cited
US1611766A
Cited
GB225640A
Cited
US1941527A
Cited
US2040544A
Cited
US2044028A
Cited
US2188741A
Cited
US2279620A
Cited
US2392113A
Cited
US2450647A
Cited
US2496179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |