Patent US2450031A successfully refreshed from Google Patents.
US2450031A
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US
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Accumulator
Assignee: AIRCRAFT HYDRAULICS Inc
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Filing: 1945-01-30
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Granted: 1948-09-28
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Expires: 1965-01-30
Abstract
No abstract record available.
Inventors
- 👤 Berger Alexandre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:18
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/103; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/31; F15B2201/315; F15B2201/3153; F15B2201/32; F15B2201/40; F15B2201/415; F15B2201/50; F15B2201/51
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) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |