US1180897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer and regulator for automatic flush-valves.
Assignee: PERFECTION VALVE Co
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Filing: 1914-12-17
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Granted: 1916-04-25
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Expires: 1934-12-17
Abstract
No abstract record available.
Inventors
- 👤 John B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:31
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791; Y10T137/86799; Y10T137/86807
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) | 1919-04-25 | 1919-10-25 | 1920-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-04-25 | 1923-10-25 | 1924-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-04-25 | 1927-10-25 | 1928-04-25 | $7700.00 | Window Closed / Lapsed |