Patent US932355A successfully refreshed from Google Patents.
US178231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in ditchers and tile-layers
Assignee: —
•
Filing: —
•
Granted: 1876-06-06
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Expires: 1893-06-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/102; Y; Y10; Y10S; Y10S37/00; Y10S37/906
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) | 1879-06-06 | 1879-12-06 | 1880-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1883-06-06 | 1883-12-06 | 1884-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1887-06-06 | 1887-12-06 | 1888-06-06 | $7700.00 | Window Closed / Lapsed |