Patent US2696871A successfully refreshed from Google Patents.
US2696871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sinuous spring for cushion construction
Assignee: —
•
Filing: —
•
Granted: 1954-12-14
•
Expires: 1971-12-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:16
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/30; A47C7/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2364499A
Cited
GB191228617A
Cited
US2124655A
Cited
US2214136A
Cited
US2239062A
Cited
US2480667A
Cited
US2571184A
Cited
US2593831A
Cited
US2591185A
Cited
US2526183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |