US78564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in the construction of sheet-metal conductor-pipes
Assignee: —
•
Filing: —
•
Granted: 1868-06-02
•
Expires: 1885-06-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; E; E03; E03B; E03B7/00; E03B7/09; E03B7/10
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) | 1871-06-02 | 1871-12-02 | 1872-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-06-02 | 1875-12-02 | 1876-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-06-02 | 1879-12-02 | 1880-06-02 | $7700.00 | Window Closed / Lapsed |