Patent US317153A successfully refreshed from Google Patents.
US317153A
Expired / Lapsed
US
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Self-locking man-hole cover for sewers
Assignee: —
•
Filing: —
•
Granted: 1885-05-05
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Expires: 1902-05-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:54
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/04; E01F13/08; E01F13/085; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995; Y10T137/7021; Y10T137/7069; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/554; Y10T70/5562; Y10T70/5575; Y10T70/558; Y10T70/5589
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) | 1888-05-04 | 1888-11-03 | 1889-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1892-05-04 | 1892-11-03 | 1893-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1896-05-04 | 1896-11-03 | 1897-05-05 | $7700.00 | Window Closed / Lapsed |