US2771092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-outlet expansion valve
Assignee: Alco Valve Co
•
Filing: 1953-01-23
•
Granted: 1956-11-20
•
Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 John A Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:40
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/028; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/335; F25B41/40; F25B41/42; F25B41/45; F25B2600/00; F25B2600/21; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/479; Y10T137/8593
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US22170A
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US232775A
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US1920505A
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US2144898A
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US2182718A
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US2277999A
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US2282879A
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US2579034A
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US2637985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |