Patent US2567537A successfully refreshed from Google Patents.
US2567537A
Expired / Lapsed
US
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Wire winding machine and method of forming coils of wire
Assignee: Individual
•
Filing: 1945-07-05
•
Granted: 1951-09-11
•
Expires: 1965-07-05
Abstract
No abstract record available.
Inventors
- 👤 Workman Ernest Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:32
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/006; B21F; B21F3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US294740A
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US299615A
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US315707A
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US543823A
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US603868A
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US1013588A
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US1230009A
Cited
US1627681A
Cited
US1732821A
Cited
US1850591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |