US3011138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer
Assignee: Radio Industries Inc
•
Filing: 1957-12-20
•
Granted: 1961-11-28
•
Expires: 1977-12-20
Abstract
No abstract record available.
Inventors
- 👤 John J Antalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:19
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03H7/0169; H03H7/0184; H01; H01F; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1690228A
Cited
US2343101A
Cited
US2283924A
Cited
US2283926A
Cited
US2450192A
Cited
US2483994A
Cited
US2614164A
Cited
US2728052A
Cited
US2753532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |