Patent US2656088A successfully refreshed from Google Patents.
US2656088A
Expired / Lapsed
US
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Stepladder having safety supporting bar
Assignee: THOMAS A GLAVIN
•
Filing: 1949-06-11
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Granted: 1953-10-20
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Expires: 1969-06-11
Abstract
No abstract record available.
Inventors
- 👤 Ara L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:13
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/18; E06C7/181; E06C7/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US645867A
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US922306A
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US2010588A
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US2088878A
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US2303078A
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US2303079A
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FR896763A
Cited
US2517991A
Cited
US2507396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |