US2648485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardboard box spring hinge
Assignee: DOUGLAS YOUNG Inc
•
Filing: 1951-01-06
•
Granted: 1953-08-11
•
Expires: 1971-01-06
Abstract
No abstract record available.
Inventors
- 👤 Young Lewis Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:16
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/02; E05D5/04; E05Y; E05Y2900/00; E05Y2900/20; E05Y2999/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US426810A
Cited
US1430029A
Cited
US1461175A
Cited
US1626301A
Cited
US2142167A
Cited
US2206918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |