US2942728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for making extruded tubing
Assignee: Harvey Machine Co Inc
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Filing: 1957-10-22
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Granted: 1960-06-28
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Hilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:14
CPC Classifications
B; B21; B21C; B21C25/00; B21C25/08; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/085; B21C23/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1664976A
Cited
US1854411A
Cited
US2639809A
Cited
DE898884C
Cited
US2810478A
Cited
GB744313A
Cited
US2819794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |