Patent US829371A successfully refreshed from Google Patents.
US829371A
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US
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Overload safety apparatus.
Assignee: Sprague Electric Co
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Filing: 1904-04-26
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Granted: 1906-08-21
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Expires: 1924-04-26
Abstract
No abstract record available.
Inventors
- 👤 Philip J Darlington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:26
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/085; H02H7/0851; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/29
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) | 1909-08-20 | 1910-02-19 | 1910-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-08-20 | 1914-02-19 | 1914-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-08-20 | 1918-02-19 | 1918-08-21 | $7700.00 | Window Closed / Lapsed |