Patent US1861017A successfully refreshed from Google Patents.
US1861017A
Expired / Lapsed
US
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Antisiphon valve
Assignee: Preferred Utilities Manufacturing Corp
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Filing: 1929-05-29
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Granted: 1932-05-31
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Expires: 1949-05-29
Abstract
No abstract record available.
Inventors
- 👤 Harry E Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:02
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7852; Y10T137/7853; Y10T137/7904; Y10T137/7908; Y10T137/7921
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) | 1935-05-31 | 1935-11-30 | 1936-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-31 | 1939-11-30 | 1940-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-31 | 1943-11-30 | 1944-05-31 | $7700.00 | Window Closed / Lapsed |