US375255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined electric motor and fan
Assignee: —
•
Filing: —
•
Granted: 1887-12-20
•
Expires: 1904-12-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:03
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/624; F04D29/626
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) | 1890-12-19 | 1891-06-20 | 1891-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1894-12-19 | 1895-06-20 | 1895-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1898-12-19 | 1899-06-20 | 1899-12-20 | $7700.00 | Window Closed / Lapsed |