Patent US3412358A successfully refreshed from Google Patents.
US3412358A
Expired / Lapsed
US
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Self-regulating heating element
Assignee: Gulton Industries Inc
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Filing: 1966-09-09
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Granted: 1968-11-19
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Expires: 1986-09-09
Abstract
No abstract record available.
Inventors
- 👤 Hummel Friedrich
- 👤 Baner Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:56
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/145; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/24; H01C; H01C7/00; H01C7/02; H01C7/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA495360A
Cited
US2526059A
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US2683673A
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US2744981A
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US2861163A
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US3111495A
Cited
US3056750A
Cited
US3243753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |