Patent US2643688A successfully refreshed from Google Patents.
US2643688A
Expired / Lapsed
US
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Device for corrugating wire
Assignee: Individual
•
Filing: 1949-07-20
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Granted: 1953-06-30
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Expires: 1969-07-20
Abstract
No abstract record available.
Inventors
- 👤 David E Crooker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:32
CPC Classifications
B; B21; B21F; B21F1/00; B21F1/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963; Y10T74/19972; Y10T74/19977; Y10T74/19981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE81284C
Cited
US242616A
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US383250A
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US626183A
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GB189621445A
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FR434140A
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US1246145A
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US1365258A
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US1732450A
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DE523906C
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US1960732A
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US2148914A
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US2408666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |