Patent CH241627A successfully refreshed from Google Patents.
US839273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal fan or pump and casing therefor.
Assignee: Individual
•
Filing: 1905-07-01
•
Granted: 1906-12-25
•
Expires: 1925-07-01
Abstract
No abstract record available.
Inventors
- 👤 Samuel Cleland Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/009
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1909-12-24 | 1910-06-25 | 1910-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-24 | 1914-06-25 | 1914-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-24 | 1918-06-25 | 1918-12-25 | $7700.00 | Window Closed / Lapsed |