US3702355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a molded article of manufacture with strengthening members formed therein
Assignee: Chemcraft Inc
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Filing: 1970-09-16
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Granted: 1972-11-07
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Expires: 1990-09-16
Abstract
Abstract An article of maunfacture formed molded sheet material which carries a plurality of article strengthening members. The strengthening members constitute a removeable part of the mold during forming of the article and are retained by the formed sheet material upon separation of the material from the permanent part of the mold. The article strengthening members are not interconnected and are adapted for movement relative to each other after the formed sheet material has been separated from the mold.
Inventors
- 👤 William G Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:30
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/12; B29C51/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |