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Patent US2652967A successfully refreshed from Google Patents.
US2652967A
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US
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Multiplatform stepladder
Assignee: CRAFT BELT Co
•
Filing: 1949-12-10
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Granted: 1953-09-22
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Expires: 1969-12-10
Abstract
No abstract record available.
Inventors
- 👤 Cecil F Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:00
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; E06C1/39; E06C1/393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE88730C
Cited
US650006A
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US861583A
Cited
GB190804412A
Cited
US950469A
Cited
US1930004A
Cited
US1820330A
Cited
US2146020A
Cited
US2368622A
Cited
US2479736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |