Patent US2797724A successfully refreshed from Google Patents.
US2797724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective multiple control mechanism for machine tools
Assignee: Individual
•
Filing: 1952-05-06
•
Granted: 1957-07-02
•
Expires: 1972-05-06
Abstract
No abstract record available.
Inventors
- 👤 Carl B Walldow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US971679A
Cited
FR839920A
Cited
US2148348A
Cited
US2310720A
Cited
US2483712A
Cited
US2561169A
Cited
US2543759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |