US3446902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode having oxygen jets to enhance performance and arc starting and stabilizing means
Assignee: Westinghouse Electric Corp
•
Filing: 1968-01-08
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Granted: 1969-05-27
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Expires: 1988-01-08
Abstract
No abstract record available.
Inventors
- 👤 Ronald R Akers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:15
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/08; C; C21; C21C; C21C5/00; C21C5/52; C21C5/5211; C21C5/5217; H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430453A
Cited
US2052796A
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US3147329A
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US3194941A
Cited
US3204075A
Cited
US3334885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |