Patent US3867731A successfully refreshed from Google Patents.
Patent US2821789A successfully refreshed from Google Patents.
US2821789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centering device for metal bar stock and the like
Assignee: Individual
•
Filing: 1957-07-18
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Granted: 1958-02-04
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Expires: 1977-07-18
Abstract
No abstract record available.
Inventors
- 👤 John L Steriss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:14
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/04; B23Q; B23Q15/00; B23Q15/20; B23Q15/22
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |