Patent US2834933A successfully refreshed from Google Patents.
US2020503A
Expired / Lapsed
US
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Adjustable leg structure
Assignee: Individual
•
Filing: 1933-04-17
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Granted: 1935-11-12
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Expires: 1953-04-17
Abstract
No abstract record available.
Inventors
- 👤 Hans C Hanson
- 👤 Rasmussen Sophus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:54
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-11 | 1939-05-13 | 1939-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-11 | 1943-05-13 | 1943-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-11 | 1947-05-13 | 1947-11-12 | $7700.00 | Window Closed / Lapsed |