Patent DE632612C successfully refreshed from Google Patents.
US2233882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking concealed hinge
Assignee: Individual
•
Filing: 1938-01-24
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Granted: 1941-03-04
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Expires: 1958-01-24
Abstract
No abstract record available.
Inventors
- 👤 Bobek William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:09
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/10; E05D11/1028; E05D11/105; E05C; E05C17/00; E05C17/02; E05C17/38; E05D1/00; E05D1/04; E05D11/1057; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/688; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531; E05Y2900/536; E05Y2900/548
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |