Patent US2978751A successfully refreshed from Google Patents.
US2978751A
Expired / Lapsed
US
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Method of making composite molded plastic wheels
Assignee: DU BOIS PLASTIC PRODUCTS Inc
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Filing: 1958-05-29
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Granted: 1961-04-11
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Expires: 1978-05-29
Abstract
No abstract record available.
Inventors
- 👤 Roy A Bright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:09
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US178528A
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US2734227A
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US758486A
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US1332169A
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US2280096A
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US2589682A
Cited
US2745138A
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US2825279A
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US2832995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |