US2729244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic accumulators
Assignee: Parker Appliance Co
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Filing: 1952-09-25
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Granted: 1956-01-03
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Expires: 1972-09-25
Abstract
No abstract record available.
Inventors
- 👤 Walter A Alaska
- 👤 Robert H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:55
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/24; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/315; F15B2201/3158; F15B2201/40; F15B2201/41; F15B2201/415
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |