Patent US381675A successfully refreshed from Google Patents.
US381675A
Expired / Lapsed
US
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System and apparatus for propelling canal-boats
Assignee: —
•
Filing: —
•
Granted: 1888-04-24
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Expires: 1905-04-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:45
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/56; B63B2021/566; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44376; Y10T24/44385; Y10T24/44453
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) | 1891-04-24 | 1891-10-24 | 1892-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1895-04-24 | 1895-10-24 | 1896-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1899-04-24 | 1899-10-24 | 1900-04-25 | $7700.00 | Window Closed / Lapsed |