Patent US2643620A successfully refreshed from Google Patents.
US2643620A
Expired / Lapsed
US
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Extrusion device
Assignee: Individual
•
Filing: 1948-11-22
•
Granted: 1953-06-30
•
Expires: 1968-11-22
Abstract
No abstract record available.
Inventors
- 👤 Leonidas C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:01
CPC Classifications
A; A21; A21C; A21C11/00; A21C11/16; A21C11/163; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1264533A
Cited
US1702191A
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US1793207A
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US1670230A
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DE648891C
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US2178261A
Cited
US2262485A
Cited
US2313949A
Cited
US2366417A
Cited
US2536649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |