US2724869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of embedding transformers
Assignee: Elastic Stop Nut Corp
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Filing: 1954-05-21
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Granted: 1955-11-29
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Merrill
- 👤 Gustav V Karlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:33
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/005; B; B29; B29C; B29C45/00; B29C45/14; B29C45/14639; H01F27/00; H01F27/02; H01F27/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |