Patent US2550226A successfully refreshed from Google Patents.
US2550226A
Expired / Lapsed
US
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Extrusion press
Assignee: Individual
•
Filing: 1948-02-19
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Granted: 1951-04-24
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Expires: 1968-02-19
Abstract
No abstract record available.
Inventors
- 👤 Colombo Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:39
CPC Classifications
A; A01; A01J; A01J17/00; B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/721; B01F27/723; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; B29B7/484; B29B7/485; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/425; B29C48/435; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/243; B29C48/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE163440C
Cited
AT35106B
Cited
US1990555A
Cited
US2048286A
Cited
US2293297A
Cited
CH240500A
Cited
US2441222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |