Patent US2939250A successfully refreshed from Google Patents.
US2939250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant honing
Assignee: Micromatic Hone Corp
•
Filing: 1957-01-31
•
Granted: 1960-06-07
•
Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 John E Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:41
CPC Classifications
B; B24; B24B; B24B35/00; B24B1/00; B24B1/04; B24B33/00; B24B33/02; Y; Y10; Y10S; Y10S29/00; Y10S29/046; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2195052A
Cited
US2176316A
Cited
US2350527A
Cited
US2271963A
Cited
US2445934A
Cited
US2468550A
Cited
US2695478A
Cited
US2767523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |