Patent US2774992A successfully refreshed from Google Patents.
US2774992A
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Process of producing pearlescent plastic articles
Assignee: Swedish Crucible Steel Co
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Filing: 1951-08-22
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Granted: 1956-12-25
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Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 Edward M Mcelligott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:06
CPC Classifications
B; B29; B29C; B29C31/00; B29C31/04; B29C31/042; B29C31/044; B29C31/045; A; A47; A47K; A47K13/00; A47K13/02; B29C43/00; B29C43/02; B29C43/021; B29C43/32; B29C43/34; B29C48/00; B29C48/03; B29C48/05; B29C2043/3433; B29C2043/3438; B29C43/36; B29C43/361; B29C2043/3615; B29L; B29L2031/00; B29L2031/709; B29L2031/7096; B29L2031/769; B29L2031/7694
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1840634A
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US2156396A
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US2167971A
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US2156508A
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US2200262A
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US2327931A
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US2564203A
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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) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |