Patent US3490558A successfully refreshed from Google Patents.
US3490558A
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Stepladder scaffold apparatus with elevating working platform
Assignee: JAMES M FOLEY
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Filing: 1968-05-22
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Granted: 1970-01-20
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Expires: 1988-05-22
Abstract
No abstract record available.
Inventors
- 👤 James M Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:06
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/16; E04; E04G; E04G1/00; E04G1/28; E04G1/30; E06C7/18; E06C7/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1384694A
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US2237543A
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US2798652A
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US2978062A
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US3176794A
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US3139154A
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US3207261A
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US3208555A
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US3344885A
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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) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |