Patent US3490341A successfully refreshed from Google Patents.
US3490341A
Expired / Lapsed
US
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Hydraulic ram
Assignee: Enerpac Tool Group Corp
•
Filing: 1968-03-27
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Granted: 1970-01-20
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Expires: 1988-03-27
Abstract
No abstract record available.
Inventors
- 👤 Donald W Sessody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:06
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1892540A
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US2724368A
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US2768610A
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AT185640B
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US3050943A
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US2997026A
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US3166990A
Cited
US3397617A
Cited
US3396637A
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US3398492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |