US2856499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactors for high frequency current
Assignee: Magnetic Heating Corp
•
Filing: 1957-02-28
•
Granted: 1958-10-14
•
Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 Robert J Stanton
- 👤 Wallace C Rudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:57
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/04; H05B6/36; H05B6/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1642198A
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US2182341A
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US2431425A
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US2470443A
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US2394391A
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US2570311A
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FR993513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |