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US2969482A
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US
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Machining systems making use of intermittent electrical discharges
Assignee: Centre National de la Recherche Scientifique
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Filing: 1957-09-30
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Granted: 1961-01-24
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Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Bruma Marc
- 👤 Magat Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:36
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB748543A
Cited
US2818490A
Cited
FR1108112A
Cited
US2796509A
Cited
US2827595A
Cited
US2804575A
Cited
US2807706A
Cited
US2856565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |