Patent US246343A successfully refreshed from Google Patents.
US246343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch-board
Assignee: —
•
Filing: —
•
Granted: 1881-08-30
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Expires: 1898-08-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/20; H02B1/207
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) | 1884-08-29 | 1885-02-28 | 1885-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-08-29 | 1889-02-28 | 1889-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-08-29 | 1893-02-28 | 1893-08-30 | $7700.00 | Window Closed / Lapsed |