Patent US2871511A successfully refreshed from Google Patents.
US2648262A
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Fibrous material extrusion apparatus
Assignee: American Manufacturing Co Inc
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Filing: 1948-09-03
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Granted: 1953-08-11
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Expires: 1968-09-03
Abstract
No abstract record available.
Inventors
- 👤 Edward L Croston
- 👤 Horace R Harbord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:56
CPC Classifications
D; D21; D21J; D21J1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2168288A
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US1764456A
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FR686884A
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US1875075A
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US2446644A
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US2473269A
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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) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |