US2581793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair with flexible seat
Assignee: Individual
•
Filing: 1945-07-10
•
Granted: 1952-01-08
•
Expires: 1965-07-10
Abstract
No abstract record available.
Inventors
- 👤 Rolo D Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:07
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/28; A47C4/30; A47C4/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US253921A
Cited
US722135A
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US661280A
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US1224891A
Cited
US1246544A
Cited
US1473098A
Cited
US1388146A
Cited
US1508134A
Cited
FR635744A
Cited
US1739552A
Cited
US2182915A
Cited
US2163359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |