Patent US2417707A successfully refreshed from Google Patents.
US2417707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic thread grinding machine
Assignee: Ex-Cell-O Corp
•
Filing: 1941-12-30
•
Granted: 1947-03-18
•
Expires: 1961-12-30
Abstract
No abstract record available.
Inventors
- 👤 Harold N Seyferth
- 👤 Gordon H Cork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:55
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/02; B24B19/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1644512A
Cited
US1933028A
Cited
US1917468A
Cited
US2056871A
Cited
US2033395A
Cited
US2101795A
Cited
US2187227A
Cited
US2174029A
Cited
US2162038A
Cited
US2251961A
Cited
US2167614A
Cited
US2171892A
Cited
US2292875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |