US2568882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable frame
Assignee: Sellstrom Manufacturing Co
•
Filing: 1946-04-20
•
Granted: 1951-09-25
•
Expires: 1966-04-20
Abstract
No abstract record available.
Inventors
- 👤 Marshall N Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:40
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248864A
Cited
FR359601A
Cited
US862421A
Cited
DE334465C
Cited
US1532480A
Cited
US1751024A
Cited
US1963437A
Cited
US2274791A
Cited
GB539692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |