Patent US207644A successfully refreshed from Google Patents.
US207644A
Expired / Lapsed
US
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Improvement in sewer-traps
Assignee: —
•
Filing: —
•
Granted: 1878-09-03
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Expires: 1895-09-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:01
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/26; E03C1/266; E03C1/2665; A; A61; A61B; A61B10/00; A61B10/0045; A61B10/007; E03C1/28; E03C1/284; Y; Y10; Y10T; Y10T137/00; Y10T137/4891
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) | 1881-09-02 | 1882-03-04 | 1882-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1885-09-02 | 1886-03-04 | 1886-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1889-09-02 | 1890-03-04 | 1890-09-03 | $7700.00 | Window Closed / Lapsed |