Patent US2738520A successfully refreshed from Google Patents.
US2738520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined sofa and bed
Assignee: Murphy Door Bed Co Inc
•
Filing: 1953-03-13
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Granted: 1956-03-20
•
Expires: 1973-03-13
Abstract
No abstract record available.
Inventors
- 👤 William L Murphy
- 👤 George J Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:29
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US390805A
Cited
US520635A
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US1448127A
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US1751897A
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US1800496A
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GB398670A
Cited
US2200052A
Cited
US2392688A
Cited
US2539103A
Cited
US2568366A
Cited
US2628367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |