US2973933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable tripod easel
Assignee: Arlington Aluminum Co
•
Filing: 1959-04-10
•
Granted: 1961-03-07
•
Expires: 1979-04-10
Abstract
No abstract record available.
Inventors
- 👤 David S Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:18
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/242; F16M11/247; A; A47; A47B; A47B3/00; A47B3/08; A47B3/0809; A47B3/0812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312363A
Cited
US2488849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |