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US3459645A
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Method of electrochemically machining a workpiece incrementally using a plurality of electrodes dimensional progressively closer to the desired configuration
Assignee: Rolls Royce PLC
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Filing: 1965-12-17
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Granted: 1969-08-05
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 John Francis Wilson
- 👤 John Goddard
- 👤 Derek Aubrey Glew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:44
CPC Classifications
B; B23; B23H; B23H3/00; B23H3/04; B23H9/00; B23H9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1376365A
Cited
US2778925A
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US3039950A
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FR1339370A
Cited
US3324021A
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US3357912A
Cited
US3372099A
Cited
US3288699A
Cited
US3363083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |