Patent US2712836A successfully refreshed from Google Patents.
US2712836A
Expired / Lapsed
US
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Coil winding machine
Assignee: Individual
•
Filing: 1951-07-24
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Granted: 1955-07-12
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Expires: 1971-07-24
Abstract
No abstract record available.
Inventors
- 👤 Robert G Marzolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:23
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/04; H02K15/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412564A
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US946531A
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US1271308A
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US1347521A
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US1638074A
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US1593781A
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US2204869A
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US2279323A
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US2559314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |