US2723406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-cutting attachment for machine tools having a reversible working spindle
Assignee: Individual
•
Filing: 1951-09-13
•
Granted: 1955-11-15
•
Expires: 1971-09-13
Abstract
No abstract record available.
Inventors
- 👤 Angst Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:31
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/25; B; B23; B23G; B23G1/00; B23G1/44; B23G1/46; Y; Y10; Y10T; Y10T408/00; Y10T408/18; Y10T408/70; Y10T408/72
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |