Patent US2790452A successfully refreshed from Google Patents.
Patent US2479962A successfully refreshed from Google Patents.
US2479962A
Expired / Lapsed
US
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Scaffold construction
Assignee: Individual
•
Filing: 1946-10-17
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Granted: 1949-08-23
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Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Alf M Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:43
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US787233A
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US1285946A
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US1819031A
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US1832537A
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US1961967A
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US2237572A
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US2303428A
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US2308832A
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US2299823A
Cited
US2359583A
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US2445453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |