Patent US839404A successfully refreshed from Google Patents.
US839404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety appliance.
Assignee: NORTHERN ELECTRICAL MANUFACTURING Co
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Filing: 1904-05-19
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Granted: 1906-12-25
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Expires: 1924-05-19
Abstract
No abstract record available.
Inventors
- 👤 Harry W Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:58
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/002; E05F1/006; E05Y; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013
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) | 1909-12-24 | 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 |