US3052016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for joining by fusion-welding of ferritic steel with austenitic steel
Assignee: BUREAU D'ETUDES INDUSTRIELLES FERNAND COURTOY
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Filing: 1958-03-19
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Granted: 1962-09-04
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Expires: 1978-03-19
Abstract
No abstract record available.
Inventors
- 👤 Zimmer Frantisek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:31
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/04; B22; B22F; B22F7/00; B22F7/06; B23K2103/00; B23K2103/02; B23K2103/04; B23K2103/05; B23K2103/18; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12937; Y10T428/12951; Y10T428/12972; Y10T428/12979
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1966403A
Cited
US2067342A
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US2100880A
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US2297554A
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US2380071A
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US2431660A
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US2763923A
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US2769277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |