Patent US4864190A successfully refreshed from Google Patents.
Patent US2714997A successfully refreshed from Google Patents.
US2714997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated tubular body and electrical coil form
Assignee: Individual
•
Filing: 1951-02-16
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Granted: 1955-08-09
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Expires: 1971-02-16
Abstract
No abstract record available.
Inventors
- 👤 Melvin S Weisbart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:13
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US878104A
Cited
US1927197A
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US1959426A
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US2017611A
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US2173859A
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US2260452A
Cited
US2256263A
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US2339432A
Cited
US2359604A
Cited
US2623445A
Cited
US2472603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |