Patent US2897561A successfully refreshed from Google Patents.
US2897561A
Expired / Lapsed
US
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Fastener
Assignee: Individual
•
Filing: 1954-11-10
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Granted: 1959-08-04
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Expires: 1974-11-10
Abstract
No abstract record available.
Inventors
- 👤 Megibow Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:03
CPC Classifications
A; A44; A44B; A44B1/00; A44B1/18; A44B1/44; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/3611; Y10T24/3613
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |