US2578245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic chuck
Assignee: Individual
•
Filing: 1947-03-12
•
Granted: 1951-12-11
•
Expires: 1967-03-12
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Heaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1261; B23B31/1284; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17213; Y10T82/00; Y10T82/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US868471A
Cited
US1095304A
Cited
US1481191A
Cited
US1812221A
Cited
US1849249A
Cited
US2290731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |