Patent US2679778A successfully refreshed from Google Patents.
US2679778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible rotary tool
Assignee: AETNA MANUFACTURING Co
•
Filing: 1953-04-02
•
Granted: 1954-06-01
•
Expires: 1973-04-02
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Krafft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:39
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/48; B25B13/481; B25B15/00; B25B15/001; B25B15/004; B25B15/008; B25B15/02; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/459
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |