US2595248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system for poweroperated hatch covers
Assignee: Greer Hydraulics Inc
•
Filing: 1948-03-29
•
Granted: 1952-05-06
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Edward M Greer
- 👤 Mercier Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:47
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/14; B63B19/19; B63B19/197
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1480257A
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US2406173A
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US2437520A
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US2396984A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |