US2586951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring supported chair
Assignee: DOROTHY K S JOHNSON
•
Filing: 1945-08-23
•
Granted: 1952-02-26
•
Expires: 1965-08-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:48
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/021; A47C3/025; A47C3/0252; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US168148A
Cited
US171186A
Cited
US181360A
Cited
US199189A
Cited
US481582A
Cited
US534065A
Cited
US581762A
Cited
US1212243A
Cited
US1261396A
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US1626161A
Cited
GB374413A
Cited
US1942301A
Cited
US1962464A
Cited
US1915480A
Cited
US1998090A
Cited
US2073872A
Cited
US2098888A
Cited
US2135833A
Cited
US2130022A
Cited
US2274117A
Cited
US2203320A
Cited
US2313559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |