Patent US3487889A successfully refreshed from Google Patents.
US3487889A
Expired / Lapsed
US
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Fabricated plastic step
Assignee: BLAZON - FLEXIBLE FLYER Inc A OH CORP
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Filing: 1967-12-22
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Granted: 1970-01-06
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Expires: 1987-12-22
Abstract
No abstract record available.
Inventors
- 👤 Isadore Horowitz
- 👤 Edward T Carlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:50
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265155A
Cited
US2792164A
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US2870793A
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US2992697A
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US3077241A
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US3260522A
Cited
US3381775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |