US2622565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for hydraulically operated working cylinders
Assignee: Hahn and Kolb GmbH and Co
•
Filing: 1949-09-28
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Granted: 1952-12-23
•
Expires: 1969-09-28
Abstract
No abstract record available.
Inventors
- 👤 Wilibald A Venus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:27
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87056; Y10T137/87072; Y10T137/87169
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1644093A
Cited
GB443851A
Cited
US2142628A
Cited
US2134208A
Cited
US2240163A
Cited
US2232038A
Cited
US2243937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |