Patent US2501464A successfully refreshed from Google Patents.
US2501464A
Expired / Lapsed
US
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Positive latch controlled hinge for davenports or sofa beds
Assignee: Signal Manufacturing Co
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Filing: 1944-05-29
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Granted: 1950-03-21
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Expires: 1964-05-29
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Bernstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:54
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/17; A47C17/175; A47C17/1756
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US696671A
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US820826A
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US835179A
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US1140852A
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GB181302A
Cited
US2224825A
Cited
US2295083A
Cited
US2317105A
Cited
US2343642A
Cited
US2341616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |