Patent US2823678A successfully refreshed from Google Patents.
US2823678A
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US
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Diathermy power controls
Assignee: Raytheon Co
•
Filing: 1954-04-29
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Granted: 1958-02-18
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Expires: 1974-04-29
Abstract
No abstract record available.
Inventors
- 👤 Alvin S Luftman
- 👤 Earle R Roswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:33
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2165848A
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US2251277A
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US2261153A
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US2546500A
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US2583785A
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US2642540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |