US2486988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control apparatus for machine tools
Assignee: National Automatic Tool Co Inc
•
Filing: 1946-04-29
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Granted: 1949-11-01
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Expires: 1966-04-29
Abstract
No abstract record available.
Inventors
- 👤 Robert A Schafer
- 👤 Ralph B Rodal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:50
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/266; B23Q5/268; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/172
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1097983A
Cited
US2005018A
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US2000553A
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US2375255A
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US2271615A
Cited
US2299851A
Cited
US2318855A
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US2307544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |