US2489867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making electrical coils
Assignee: BELMONT RADIO Corp
•
Filing: 1946-06-13
•
Granted: 1949-11-29
•
Expires: 1966-06-13
Abstract
No abstract record available.
Inventors
- 👤 Orio Pat A D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:40
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US475183A
Cited
US1606393A
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US1681736A
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US1739246A
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US1874723A
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US2177260A
Cited
US2193770A
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US2241282A
Cited
US2282759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |