Patent US2688154A successfully refreshed from Google Patents.
US2688154A
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Device for extruding thin-walled tubing
Assignee: Huckfeldt and Thorlichen
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Filing: 1949-03-03
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Granted: 1954-09-07
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Expires: 1969-03-03
Abstract
No abstract record available.
Inventors
- 👤 Huckfeldt Gebhard Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:35
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0003; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/25; B29C48/30; B29C48/32; B29C48/325; B29C48/327; B29C48/34; B29C48/36; B29C48/50; B29C48/695; B29C48/70; B29C48/705; B29C48/001; B29C48/0018; B29C48/0019
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2097684A
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US2047554A
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US2443053A
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US2461630A
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US2461975A
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US2514841A
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US2529897A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |