US2927598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-spill anti-siphon shut off valve
Assignee: Individual
•
Filing: 1955-01-24
•
Granted: 1960-03-08
•
Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Walter Van E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:15
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/104; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1486251A
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US2159691A
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US2282188A
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US2252164A
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US2325956A
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US2272304A
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US2306508A
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US2303037A
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US2324084A
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US2621015A
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US2604113A
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US2745432A
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US2802481A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |