Patent US2887224A successfully refreshed from Google Patents.
US2887224A
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Extrusion die lubrication
Assignee: Curtiss Wright Corp
•
Filing: 1953-10-27
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Granted: 1959-05-19
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Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter H Stulen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL71137C
Cited
US401208A
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DE573901C
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US880563A
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US1957234A
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GB607285A
Cited
GB624466A
Cited
US2539716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |