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US3399295A
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US
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Thermostatically controlled electric immersion heater units
Assignee: KEM KREST PRODUCTS CO
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Filing: 1965-10-20
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Granted: 1968-08-27
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Gabriel A Chaustowich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:34
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1837000A
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US2192655A
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US2448669A
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US2437262A
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US2750487A
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US2789201A
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US2792474A
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US3171015A
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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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |