US926968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for preventing the return of waste water into water-supply pipes.
Assignee: Individual
•
Filing: 1908-11-03
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Granted: 1909-07-06
•
Expires: 1928-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert Stickdorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:20
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436; Y10T137/8593; Y10T137/87917; Y10T137/88054
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) | 1912-07-05 | 1913-01-04 | 1913-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-07-05 | 1917-01-04 | 1917-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-07-05 | 1921-01-04 | 1921-07-06 | $7700.00 | Window Closed / Lapsed |