Patent US2856565A successfully refreshed from Google Patents.
US2856565A
Expired / Lapsed
US
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Electrical discharge machining
Assignee: Elox Corporation of Michigan
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Filing: 1956-12-24
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Granted: 1958-10-14
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Victor E Matulaitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:37
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1998107A
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US2310092A
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US2134439A
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US2235385A
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US2298956A
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US2756316A
Cited
US2628330A
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US2785279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |