US2613703A
Expired / Lapsed
US
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Volumetric hydraulic system for precisely controlling position
Assignee: Individual
•
Filing: 1950-06-29
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Granted: 1952-10-14
•
Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harry B Calvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:47
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B11/12; F15B11/13; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B2013/0414; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6492; Y10T83/6499; Y10T83/6508; Y10T83/6515; Y10T83/6518; Y10T83/6523; Y10T83/6524; Y10T83/6529
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US651502A
Cited
US952811A
Cited
US1561341A
Cited
US1969063A
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US1895732A
Cited
US2127877A
Cited
US2361460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |