US2775255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling hydraulic surge
Assignee: Individual
•
Filing: 1952-07-19
•
Granted: 1956-12-25
•
Expires: 1972-07-19
Abstract
No abstract record available.
Inventors
- 👤 Robert E Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:05
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/008; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16L55/053; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US417329A
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US1848531A
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DE561694C
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US860820A
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FR516944A
Cited
US1846577A
Cited
GB328654A
Cited
US2138654A
Cited
US2261364A
Cited
US2417873A
Cited
US2583215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |