Patent US3041635A successfully refreshed from Google Patents.
US3041635A
Expired / Lapsed
US
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Sofa-bed
Assignee: Perfection Mattress and Spring Co
•
Filing: 1960-06-20
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Granted: 1962-07-03
•
Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Richard T Holtzclaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:25
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/13; A47C17/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US133992A
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US830273A
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US1505616A
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US2038832A
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US2436546A
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US2548570A
Cited
FR980688A
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US2783480A
Cited
US2627076A
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US2744266A
Cited
US2937384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |