Patent US2723401A successfully refreshed from Google Patents.
US2723401A
Expired / Lapsed
US
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Combined backrest and bed widening extension for couches
Assignee: Individual
•
Filing: 1951-12-11
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Granted: 1955-11-15
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Expires: 1971-12-11
Abstract
No abstract record available.
Inventors
- 👤 Brede-Horst Elizabeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:31
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US570208A
Cited
US848001A
Cited
US1139785A
Cited
DE578867C
Cited
US2069604A
Cited
FR819066A
Cited
US2236753A
Cited
CH273669A
Cited
US2663878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |