Patent US2729280A successfully refreshed from Google Patents.
US2729280A
Expired / Lapsed
US
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Chair seat fastener
Assignee: Shwayder Brothers Inc
•
Filing: 1954-03-19
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Granted: 1956-01-03
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Expires: 1974-03-19
Abstract
No abstract record available.
Inventors
- 👤 John B Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2685330A
Cited
US631750A
Cited
GB145256A
Cited
US2390878A
Cited
US2460027A
Cited
US2525126A
Cited
US2656881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |