Patent US2934861A successfully refreshed from Google Patents.
US2934861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of machine tools
Assignee: Individual
•
Filing: 1954-12-22
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Granted: 1960-05-03
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Expires: 1974-12-22
Abstract
No abstract record available.
Inventors
- 👤 Engel Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:48
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/12; B23Q11/121; B23Q11/123; B24; B24B; B24B55/00
Claims Analysis
Total Claims: 0
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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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |