US3536878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic heating apparatus including microwave coupling structure and filters therefor
Assignee: General Electric Co
•
Filing: 1968-12-31
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Granted: 1970-10-27
•
Expires: 1988-12-31
Abstract
No abstract record available.
Inventors
- 👤 Louis H Fitzmayer
- 👤 James E Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6482; H05B6/642; H05B6/70; H05B6/702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2700136A
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US2851666A
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US2877433A
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US3377562A
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US3187277A
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US3321605A
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US3411114A
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US3448386A
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US3439144A
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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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |