Patent US815628A successfully refreshed from Google Patents.
US815628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary battery.
Assignee: X ELECTRIC ACCUMULATOR COMPANY Ltd
•
Filing: 1905-04-11
•
Granted: 1906-03-20
•
Expires: 1925-04-11
Abstract
No abstract record available.
Inventors
- 👤 Emil Laurence Oppermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:41
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1909-03-19 | 1909-09-18 | 1910-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-03-19 | 1913-09-18 | 1914-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-03-19 | 1917-09-18 | 1918-03-20 | $7700.00 | Window Closed / Lapsed |