Patent US2792869A successfully refreshed from Google Patents.
US2792869A
Expired / Lapsed
US
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Wire coiling machine having an accurate wire feeding mechanism
Assignee: Sleeper and Hartley Inc
•
Filing: 1954-07-29
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Granted: 1957-05-21
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Expires: 1974-07-29
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Halvorsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
B; B21; B21F; B21F23/00; B21F23/005; B21F3/00; B21F3/02; B21F3/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326031A
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US1132177A
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US1295044A
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US1796992A
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US1775770A
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US1828413A
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US2120146A
Cited
US2163019A
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US2663198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |