US81420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved device foe soldering oah s
Assignee: —
•
Filing: —
•
Granted: 1868-08-25
•
Expires: 1885-08-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0531
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) | 1871-08-25 | 1872-02-24 | 1872-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-08-25 | 1876-02-24 | 1876-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-08-25 | 1880-02-24 | 1880-08-25 | $7700.00 | Window Closed / Lapsed |