Patent US3013309A successfully refreshed from Google Patents.
US3013309A
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US
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Extrusion method
Assignee: EIDP Inc
•
Filing: 1958-07-07
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Granted: 1961-12-19
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Maier Robert Edward
- 👤 Jr Frank Clyde Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/06; B29C48/09; B29C48/10; B29C48/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984038A
Cited
US2364552A
Cited
US2479804A
Cited
GB706111A
Cited
US2709834A
Cited
US2813301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |