Patent US2446972A successfully refreshed from Google Patents.
US2446972A
Expired / Lapsed
US
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Adjustable scaffold structure
Assignee: Individual
•
Filing: 1946-09-11
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Granted: 1948-08-10
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Expires: 1966-09-11
Abstract
No abstract record available.
Inventors
- 👤 Peter A Wyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:41
CPC Classifications
E; E04; E04G; E04G1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US588982A
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US1808082A
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US1890029A
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GB493181A
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US2203113A
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US2294240A
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US2290535A
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US2335046A
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US2379446A
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US2394221A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |