US3045700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston slide valve
Assignee: Alco Valve Co
•
Filing: 1957-06-24
•
Granted: 1962-07-24
•
Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Irvin E Wiegers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:53
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86606; Y10T137/8667; Y10T137/86694; Y10T137/86702; Y10T137/86839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US393596A
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US518026A
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US964866A
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US1119640A
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US2355434A
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US2526709A
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US2616449A
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DE802298C
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DE875179C
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FR1071554A
Cited
US2709421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |