US2497608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic circuits for machine tools
Assignee: Rockford Machine Tool Co
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Filing: 1947-05-15
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Granted: 1950-02-14
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Expires: 1967-05-15
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Herrstrum
- 👤 Stanley A Bjorklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/027; B23Q5/033; F15B11/028; F15B11/036; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20546; F15B2211/20576; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/329; F15B2211/355; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/7053; F15B2211/71; F15B2211/7107; F15B2211/7114; F15B2211/7128; F15B2211/75; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/504756; Y10T409/505412; Y10T409/505576
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1843082A
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US1866348A
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US1840231A
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US1812587A
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US1909166A
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US2004399A
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US1999248A
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US2271615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |