Patent US2233558A successfully refreshed from Google Patents.
US2233558A
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Extrusion chamber for plastic extrusion presses
Assignee: HYDRAULIC PRESS Corp Inc
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Filing: 1936-07-10
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Granted: 1941-03-04
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Expires: 1956-07-10
Abstract
No abstract record available.
Inventors
- 👤 Victor S Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:09
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/1775; B29C45/72; B29C45/74; B29C48/00; B29C48/25; B29C48/78; B29C48/793; B29C48/797; B29C48/80; B29C48/83; B29C48/832; B29C48/86; B29C48/865; B29C48/03
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) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |