Patent US687829A successfully refreshed from Google Patents.
US687829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric controller.
Assignee: Individual
•
Filing: 1901-09-14
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Granted: 1901-12-03
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Expires: 1921-09-14
Abstract
No abstract record available.
Inventors
- 👤 Charles H Keeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/18; H02P1/20
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) | 1904-12-02 | 1905-06-03 | 1905-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-12-02 | 1909-06-03 | 1909-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-12-02 | 1913-06-03 | 1913-12-03 | $7700.00 | Window Closed / Lapsed |