US826574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic door-closing device.
Assignee: COBURN TROLLEY TRACK MANUFACTURING Co
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Filing: 1905-11-13
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Granted: 1906-07-24
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Expires: 1925-11-13
Abstract
No abstract record available.
Inventors
- 👤 Francis Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:37
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/32; F24F11/33; E; E05; E05Y; E05Y2800/00; E05Y2800/25; E05Y2800/252
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) | 1909-07-23 | 1910-01-22 | 1910-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-07-23 | 1914-01-22 | 1914-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-07-23 | 1918-01-22 | 1918-07-24 | $7700.00 | Window Closed / Lapsed |