US112887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in iron railings
Assignee: —
•
Filing: —
•
Granted: 1871-03-21
•
Expires: 1888-03-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:44
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/1413; E04H17/1417; E04F; E04F11/00; E04F11/18; E04F11/181
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) | 1874-03-20 | 1874-09-19 | 1875-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1878-03-20 | 1878-09-19 | 1879-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1882-03-20 | 1882-09-19 | 1883-03-21 | $7700.00 | Window Closed / Lapsed |