US142486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in telegraph apparatus
Assignee: —
•
Filing: —
•
Granted: 1873-09-02
•
Expires: 1890-09-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:41
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/26; H01F; H01F7/00; H01F7/06
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) | 1876-09-01 | 1877-03-03 | 1877-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-09-01 | 1881-03-03 | 1881-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-09-01 | 1885-03-03 | 1885-09-02 | $7700.00 | Window Closed / Lapsed |