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US831071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device.
Assignee: MICHAEL JOSEPH DOHERTY
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Filing: 1902-07-07
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Granted: 1906-09-18
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Expires: 1922-07-07
Abstract
No abstract record available.
Inventors
- 👤 George Hagar Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:59
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/02; H02H3/021; H02H3/023
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) | 1909-09-17 | 1910-03-19 | 1910-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-09-17 | 1914-03-19 | 1914-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-09-17 | 1918-03-19 | 1918-09-18 | $7700.00 | Window Closed / Lapsed |