Patent US690151A successfully refreshed from Google Patents.
US690151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of utilizing electrical earth-currents.
Assignee: Individual
•
Filing: 1900-07-24
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Granted: 1901-12-31
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Expires: 1920-07-24
Abstract
No abstract record available.
Inventors
- 👤 Emil Jahr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:53
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/44; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1904-12-30 | 1905-07-01 | 1905-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-12-30 | 1909-07-01 | 1909-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-12-30 | 1913-07-01 | 1913-12-31 | $7700.00 | Window Closed / Lapsed |