Patent US2668226A successfully refreshed from Google Patents.
US2668226A
Expired / Lapsed
US
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High-frequency electronic drying apparatus
Assignee: EIDP Inc
•
Filing: 1950-06-22
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Granted: 1954-02-02
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Expires: 1970-06-22
Abstract
No abstract record available.
Inventors
- 👤 John G Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:18
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/32; F26B3/34; F26B3/347; F26B13/00; F26B13/001; F26B13/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1934703A
Cited
GB433547A
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US2385567A
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US2433067A
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GB577208A
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US2456611A
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US2492187A
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US2452197A
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US2473251A
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US2464403A
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US2464404A
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US2505104A
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US2503779A
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US2454708A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |