Patent CA2074798A1 successfully refreshed from Google Patents.
US817719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical-circuit controller.
Assignee: Individual
•
Filing: 1901-11-30
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Granted: 1906-04-10
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Expires: 1921-11-30
Abstract
No abstract record available.
Inventors
- 👤 Harry Ward Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:55
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) | 1909-04-09 | 1909-10-09 | 1910-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-04-09 | 1913-10-09 | 1914-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-04-09 | 1917-10-09 | 1918-04-10 | $7700.00 | Window Closed / Lapsed |