Patent US2952041A successfully refreshed from Google Patents.
US2952041A
Expired / Lapsed
US
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Process for intermittent flow of plastic material
Assignee: EIDP Inc
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Filing: 1956-05-31
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Granted: 1960-09-13
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Expires: 1976-05-31
Abstract
No abstract record available.
Inventors
- 👤 Bernhardt Ernest Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:29
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C48/00; B29C48/03; B29C48/25; B29C48/36; B29C48/395; Y; Y10; Y10S; Y10S264/00; Y10S264/17; Y10S425/00; Y10S425/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |