US3717567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of sonic resonat energy in electrical machining
Assignee: Individual
•
Filing: 1970-10-26
•
Granted: 1973-02-20
•
Expires: 1990-10-26
Abstract
Abstract A device for electrical machining which consists of applying sonic energy to the work tool element. The work tool is resonantly vibrated so that a wave pattern is transmitted to the tip thereof adjacent the workpiece and is transmitted through the working fluid to the workpiece.
Inventors
- 👤 A Bodine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:50
CPC Classifications
B; B23; B23H; B23H7/00; B23H7/26; B23H7/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |