US2616453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic accumulator and valve therefor
Assignee: Individual
•
Filing: 1951-06-25
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Granted: 1952-11-04
•
Expires: 1971-06-25
Abstract
No abstract record available.
Inventors
- 👤 Donald C Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:46
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/305; F15B2201/40; F15B2201/41; F15B2201/411; F15B2201/415; F15B2201/4155; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2546; Y10T137/2549
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |