US2572974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control element for plural hydraulic motor systems
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1949-06-16
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Granted: 1951-10-30
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Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 Berger Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:47
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/08; Y; Y10; Y10S; Y10S60/00; Y10S60/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233944A
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US2245369A
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US2355997A
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US2275471A
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US2456125A
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US2431944A
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US2398007A
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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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |