US2624909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-acting hinge frame
Assignee: Individual
•
Filing: 1950-08-18
•
Granted: 1953-01-13
•
Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
- 👤 Clemens W Kujawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/48; E05D15/50; E05Y; E05Y2900/00; E05Y2900/30; E05Y2900/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1892491A
Cited
US2166534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |