US2409397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety cutoff for power-operated hand tools
Assignee: Individual
•
Filing: 1943-10-13
•
Granted: 1946-10-15
•
Expires: 1963-10-13
Abstract
No abstract record available.
Inventors
- 👤 Edward F Sheehan
- 👤 George V Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/12; B; B28; B28D; B28D1/00; B28D1/14; B28D7/00; Y; Y10; Y10S; Y10S37/00; Y10S37/906; Y10S408/00; Y10S408/71; Y10T; Y10T408/00; Y10T408/18
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) | 1949-10-14 | 1950-04-15 | 1950-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-14 | 1954-04-15 | 1954-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-14 | 1958-04-15 | 1958-10-15 | $7700.00 | Window Closed / Lapsed |