Patent US3456061A successfully refreshed from Google Patents.
US3456061A
Expired / Lapsed
US
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Temperature control for electric heating devices
Assignee: Inductotherm Linemelt Corp
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Filing: 1967-05-22
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Granted: 1969-07-15
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 James L Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:59
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/27; G05D23/1906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1884637A
Cited
US2448008A
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US2459616A
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US2724037A
Cited
US2916593A
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US3347972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |