US217841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in sewer-trap attachments
Assignee: —
•
Filing: —
•
Granted: 1879-07-22
•
Expires: 1896-07-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:32
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/294; E03C1/296; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4516; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7917
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) | 1882-07-21 | 1883-01-20 | 1883-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-07-21 | 1887-01-20 | 1887-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-07-21 | 1891-01-20 | 1891-07-22 | $7700.00 | Window Closed / Lapsed |