US2411971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion machine
Assignee: Hydraulic Development Corp Inc
•
Filing: 1943-03-10
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Granted: 1946-12-03
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Expires: 1963-03-10
Abstract
No abstract record available.
Inventors
- 👤 Howard F Macmillin
- 👤 Paul C Pocock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/92; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/428; B29B7/429; B29B7/74; B29B7/7476; B29B7/748; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92323; B29C2948/92457; B29C2948/92504; B29C2948/92571; B29C2948/9258; B29C2948/9259; B29C2948/92704; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92885; B29C2948/92904; B29C2948/92952; B29C2948/92971; B29C48/03; B29C48/252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-02 | 1950-06-03 | 1950-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-02 | 1954-06-03 | 1954-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-02 | 1958-06-03 | 1958-12-03 | $7700.00 | Window Closed / Lapsed |