US2693498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode assembly for glass furnaces
Assignee: Individual
•
Filing: 1953-08-03
•
Granted: 1954-11-02
•
Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Harvey L Penberthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:30
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/03; F; F16; F16B; F16B9/00; F16B9/05; F16B9/056; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647614A
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US855441A
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US863074A
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US932368A
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US1615109A
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US1572534A
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US1663356A
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US1849510A
Cited
US1849123A
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US1891539A
Cited
US2159361A
Cited
US2419139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |