US2977458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance welding of aluminum and its alloys
Assignee: Compagnie Generale du Duralumin et du Cuivre SA
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Filing: 1958-02-12
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Granted: 1961-03-28
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Tournaire Marcel
- 👤 Trompier Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:31
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/18; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3615
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA483355A
Cited
US1115943A
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AT65888B
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US1692358A
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US1804059A
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US2001688A
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US2253375A
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US2681402A
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US2829236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |