Patent US4357798A successfully refreshed from Google Patents.
US2395501A
Expired / Lapsed
US
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Concealed door hinge
Assignee: Individual
•
Filing: 1943-01-30
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Granted: 1946-02-26
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Expires: 1963-01-30
Abstract
No abstract record available.
Inventors
- 👤 Carl J Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:02
CPC Classifications
E; E05; E05D; E05D3/00; E05D3/06; E05D3/14; E05D3/145; E05D3/147; E05D15/00; E05D15/28; E05D15/32; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531
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) | 1949-02-25 | 1949-08-27 | 1950-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-25 | 1953-08-27 | 1954-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-25 | 1957-08-27 | 1958-02-26 | $7700.00 | Window Closed / Lapsed |