Patent US4561469A successfully refreshed from Google Patents.
US2672043A
Expired / Lapsed
US
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Key retaining device
Assignee: Individual
•
Filing: 1950-09-25
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Granted: 1954-03-16
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Expires: 1970-09-25
Abstract
No abstract record available.
Inventors
- 👤 Louis W Folscheid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:02
CPC Classifications
E; E05; E05B; E05B19/00; E05B19/0005; A; A45; A45C; A45C11/00; A45C11/32; A45C11/321; A45C11/325; E05B37/00; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676
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) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |