US3015015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating the average effect of an electric heating apparatus
Assignee: SPECIALPAPPER AB
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Filing: 1959-06-23
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Granted: 1961-12-26
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Expires: 1979-06-23
Abstract
No abstract record available.
Inventors
- 👤 Wirma Adolf Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:20
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0225; H01; H01H; H01H37/00; H01H37/02; H01H37/10; H01H37/12; H01H37/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |