Patent US2444639A successfully refreshed from Google Patents.
US2444639A
Expired / Lapsed
US
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Projection method for measuring the inner contours of wire drawing dies
Assignee: American Steel and Wire Company of New Jersey
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Filing: 1944-03-11
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Granted: 1948-07-06
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Expires: 1964-03-11
Abstract
No abstract record available.
Inventors
- 👤 Flint C Elder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:40
CPC Classifications
G; G04; G04D; G04D7/00; G04D7/004; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1227528A
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US1228685A
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US1401664A
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US1799604A
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US1813185A
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US2155248A
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US2221154A
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US2256228A
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US2261772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |