US2447334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankshaft regrinding chuck
Assignee: NORMAN Co VAN
•
Filing: 1945-12-22
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Granted: 1948-08-17
•
Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Francis P Healy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:25
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/36; B23B2260/00; B23B2260/088; Y; Y10; Y10T; Y10T82/00; Y10T82/19; Y10T82/195; Y10T82/198
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) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |