Patent US2947997A successfully refreshed from Google Patents.
US2947997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding sofa bed structure
Assignee: Foster Brothers Manufacturing Co
•
Filing: 1957-03-06
•
Granted: 1960-08-09
•
Expires: 1977-03-06
Abstract
No abstract record available.
Inventors
- 👤 William J Helton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:39
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/22; A47C17/23; A47C17/225
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US871181A
Cited
US1095466A
Cited
US2111521A
Cited
US2759198A
Cited
US2721337A
Cited
US2785415A
Cited
US2844827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |