US2986158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-draining hydraulic energy accumulator
Assignee: Individual
•
Filing: 1956-08-27
•
Granted: 1961-05-30
•
Expires: 1976-08-27
Abstract
No abstract record available.
Inventors
- 👤 Gratzmuller Jean Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:13
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/24; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/21; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/40; F15B2201/405; F15B2201/4056; F15B2201/41; F15B2201/411; F15B2201/413; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7734; Y10T137/8593; Y10T137/87917; Y10T137/88046; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1166358A
Cited
US1763777A
Cited
US2257204A
Cited
US2301031A
Cited
US2331084A
Cited
US2538133A
Cited
US2781776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |