US2633182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible chair
Assignee: Individual
•
Filing: 1947-03-05
•
Granted: 1953-03-31
•
Expires: 1967-03-05
Abstract
No abstract record available.
Inventors
- 👤 Elenora B Lehman
- 👤 Edgar A Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:03
CPC Classifications
A; A47; A47D; A47D1/00; A47D1/008; A47D1/0085; A47D1/002; A47D1/0081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US256272A
Cited
US317707A
Cited
US585913A
Cited
US1003899A
Cited
US1256936A
Cited
US1887234A
Cited
US2022955A
Cited
US2281732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |