US2431669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical adjustment device
Assignee: Individual
•
Filing: 1944-05-22
•
Granted: 1947-11-25
•
Expires: 1964-05-22
Abstract
No abstract record available.
Inventors
- 👤 Otto R Nemeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
G; G02; G02B; G02B1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US117863A
Cited
US400033A
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US580665A
Cited
US1240119A
Cited
US1612276A
Cited
US1746607A
Cited
US1664106A
Cited
US2157112A
Cited
US2158546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |