Patent US3048686A successfully refreshed from Google Patents.
US3048686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel furnace with very high frequencies to heat substances, for example, foodstuffs
Assignee: US Philips Corp
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Filing: 1959-10-14
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Granted: 1962-08-07
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Expires: 1979-10-14
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:45
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/78; H05B6/782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2500752A
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US2627571A
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US2685065A
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US2683238A
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US2684469A
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US2649578A
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US2820127A
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US2868939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |