US3523170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for microwave heater apparatus
Assignee: Sunbeam Corp
•
Filing: 1967-10-27
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Granted: 1970-08-04
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Expires: 1987-10-27
Abstract
No abstract record available.
Inventors
- 👤 Helmut Boehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6482; H05B6/6447; H05B6/645
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2839649A
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US3225302A
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US3195013A
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US3428864A
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US3302060A
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US3320396A
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US3317699A
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US3287568A
Cited
US3393348A
Cited
US3407279A
Cited
US3398371A
Cited
US3440386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |