US2712618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic apparatus
Assignee: Advance Transformer Co
•
Filing: 1950-08-30
•
Granted: 1955-07-05
•
Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Albert E Feinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:52
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/08; H01F38/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2025471A
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US2370635A
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US2382638A
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US2510209A
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US2541033A
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US2465031A
Cited
US2436400A
Cited
US2487092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |