Patent US2572601A successfully refreshed from Google Patents.
US2572601A
Expired / Lapsed
US
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Spinning device for earring screw clamps
Assignee: Individual
•
Filing: 1949-02-16
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Granted: 1951-10-23
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Expires: 1969-02-16
Abstract
No abstract record available.
Inventors
- 👤 Wilde Andrew A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:42
CPC Classifications
A; A44; A44C; A44C7/00; A44C7/004
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) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |