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US2556276A
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Apparatus for simultaneously advancing and working organic plastic material
Assignee: AT&T Inc
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Filing: 1947-11-28
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Granted: 1951-06-12
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Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 George E Henning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:01
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/36; B29C48/50; B29C48/505; B29C48/59; B29C48/61; B29C48/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
AN APPARATUS FOR SIMULATANEOSLY ADVANCING AND WORKING ORGANIC PLASTIC MATERIAL, WHICH COMPRISES AN EXTRUSION CYLINDER HAVING AN IMPERFORATE, SMOOTH-WALLED BORE THEREIN OF SUBSTANTIALLY UNIFORM DIAMETER THROUGHOUT ITS LENGTH, AND A STOCK SCREW POSITIONED IN THE EXTRUSION CYLINDER AND HAVING A STARTING AND A DELIVERY END, SAID STOCK SCREW BEING PROVIDED WITH A ROOT. OF UNIFORM DIAMETER AND A THREAD EXTENDING SUB-
Claim 2
Independent Claim
61 words
AN APPARATUS FOR SIMULATANEOSLY ADVANCING AND WORKING ORGANIC PLASTIC MATERIAL, WHICH COMPRISES AN EXTRUSION CYLINDER HAVING AN IMPERFORATE, SMOOTH-WALLED BORE THEREIN OF SUBSTANTIALLY UNIFORM DIAMETER THROUGHOUT ITS LENGTH, AND A STOCK SCREW POSITIONED IN THE EXTRUSION CYLINDER AND HAVING A STARTING AND A DELIVERY END, SAID STOCK SCREW BEING PROVIDED WITH A ROOT. OF UNIFORM DIAMETER AND A THREAD EXTENDING SUB-
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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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |