US2948871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature inductive devices
Assignee: United Transformer Corp
•
Filing: 1957-07-26
•
Granted: 1960-08-09
•
Expires: 1977-07-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore L Craige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:19
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1287982A
Cited
GB421353A
Cited
US2498702A
Cited
US2628342A
Cited
US2677123A
Cited
US2682021A
Cited
US2768359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |