Patent US3412194A successfully refreshed from Google Patents.
US3412194A
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Glass-melting electrodes for glass-melting furnaces
Assignee: Schwarzkopf Technologies Corp
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Filing: 1965-11-19
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Granted: 1968-11-19
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Expires: 1985-11-19
Abstract
No abstract record available.
Inventors
- 👤 Egon Pipitz
- 👤 Gerolf Strohmeier
- 👤 Karl Sedlatschek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:54
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/03; C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0031; H01; H01B; H01B1/00; H01B1/14; H01B1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3125441A
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US2189387A
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US2209515A
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US2276295A
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US2767235A
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US2940951A
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US3079452A
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US3119717A
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US3309209A
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 |