US2849840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for grinding nail cutter dies
Assignee: United States Steel Corp
•
Filing: 1955-04-28
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Granted: 1958-09-02
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Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Albert L Stoeckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:58
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/20; B21; B21G; B21G3/00; B21G3/16; Y; Y10; Y10S; Y10S451/00; Y10S451/914
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |