US3373239A
Expired / Lapsed
US
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High-temperature electric furnace with molybdenum silicide heater elements
Assignee: Siemens Plania Werke AG
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Filing: 1965-06-16
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Granted: 1968-03-12
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Expires: 1985-06-16
Abstract
Abstract 1,086,868. Electric resistance furnaces. SIEMENS-PLANIAWERKE A.G. FUR KOHLEFABRIKATE. June 16, 1965 [June 18, 1964], No. 25562/65. Heading H5H. A high-temperature electric furnace comprises a multi-loop molybdenum silicide heater element between and suspended from terminals and means 2 supporting a loop between the terminals. Means 2 comprise ceramic bars 3, protruding from the furnace walls having molybdenum silicide rollers between the support 3 and the element.
Inventors
- 👤 Rubisch Ottmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:43
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/62; F; F27; F27D; F27D11/00; F27D11/02; H05B3/64; H05B3/66; H05B2203/00; H05B2203/018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1767171A
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US1853382A
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US1913695A
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US1915747A
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US1923644A
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GB838917A
Cited
US3092681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |