Patent US304673A successfully refreshed from Google Patents.
US304673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-arc
Assignee: —
•
Filing: —
•
Granted: 1884-09-02
•
Expires: 1901-09-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:19
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/0081; H05B31/0084; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
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) | 1887-09-02 | 1888-03-03 | 1888-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-09-02 | 1892-03-03 | 1892-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-09-02 | 1896-03-03 | 1896-09-02 | $7700.00 | Window Closed / Lapsed |