Patent US2825231A successfully refreshed from Google Patents.
Patent US171849A successfully refreshed from Google Patents.
US171849A
Expired / Lapsed
US
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Improvement in traps for sewer-pipes
Assignee: —
•
Filing: —
•
Granted: 1876-01-04
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Expires: 1893-01-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/294; E03C1/295; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3222; Y10T137/3258; Y10T137/4456; Y10T137/4463; Y10T137/4471; Y10T137/4478; Y10T137/4501; Y10T137/4516
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) | 1879-01-03 | 1879-07-05 | 1880-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1883-01-03 | 1883-07-05 | 1884-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1887-01-03 | 1887-07-05 | 1888-01-04 | $7700.00 | Window Closed / Lapsed |