Patent US2855194A successfully refreshed from Google Patents.
US2855194A
Expired / Lapsed
US
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System for sealing a converter
Assignee: Brassert Oxygen Technik AG
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Filing: 1955-07-15
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Granted: 1958-10-07
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Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Konig Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US84335A
Cited
US805834A
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FR423494A
Cited
US1028437A
Cited
US1415183A
Cited
FR22597E
Cited
US1866824A
Cited
US2377597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |