Patent US2815561A successfully refreshed from Google Patents.
US2815561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic feed control apparatus for machine tools
Assignee: Continental Machines Inc
•
Filing: 1955-11-14
•
Granted: 1957-12-10
•
Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Robert L Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
B; B23; B23D; B23D55/00; B23D55/08; B23D55/088; B23D55/089; B23D36/00; B23D55/04; B23D55/046; Y; Y10; Y10T; Y10T83/00; Y10T83/141; Y10T83/148; Y10T83/525; Y10T83/536; Y10T83/647; Y10T83/6472; Y10T83/6475; Y10T83/6584; Y10T83/6592; Y10T83/6596; Y10T83/707; Y10T83/7264; Y10T83/849; Y10T83/852
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) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |