US2424115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevating support for scaffold platforms
Assignee: Individual
•
Filing: 1945-12-14
•
Granted: 1947-07-15
•
Expires: 1965-12-14
Abstract
No abstract record available.
Inventors
- 👤 Powell Archibald Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:22
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/18; E04G1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US588982A
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US1195976A
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US664508A
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US1366487A
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US1416296A
Cited
US1441806A
Cited
US2007480A
Cited
US2216912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |