US1187683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backwater-valve for sewer-pipes.
Assignee: Individual
•
Filing: 1915-05-15
•
Granted: 1916-06-20
•
Expires: 1935-05-15
Abstract
No abstract record available.
Inventors
- 👤 Bert T Vernon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:48
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/033; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/8593; Y10T137/86292; Y10T137/863
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) | 1919-06-20 | 1919-12-20 | 1920-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-06-20 | 1923-12-20 | 1924-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-06-20 | 1927-12-20 | 1928-06-20 | $7700.00 | Window Closed / Lapsed |