Patent US2575461A successfully refreshed from Google Patents.
US2575461A
Expired / Lapsed
US
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Adjustable scaffold base
Assignee: Universal Fittings & Scaffoldi
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Filing: 1946-09-18
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Granted: 1951-11-20
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Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas C North
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US787233A
Cited
GB191415346A
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US1552333A
Cited
US1880767A
Cited
GB452286A
Cited
DE657686C
Cited
US2126844A
Cited
US2361614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |