Patent US3328058A successfully refreshed from Google Patents.
Patent US3500012A successfully refreshed from Google Patents.
US3500012A
Expired / Lapsed
US
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Microwave heating apparatus
Assignee: Individual
•
Filing: 1968-03-06
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Granted: 1970-03-10
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Expires: 1988-03-06
Abstract
No abstract record available.
Inventors
- 👤 Kenneth Hilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:08
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB1050493A
Cited
US2498719A
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US2575799A
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US3069624A
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US3227971A
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US3235702A
Cited
US3304399A
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US3307010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |