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US2458340A
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US
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Method of electrically welding composite metal reel heads
Assignee: AT&T Inc
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Filing: 1944-05-20
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Granted: 1949-01-04
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Expires: 1964-05-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Bureau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:34
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828033A
Cited
US1749917A
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US1876140A
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US2006458A
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US2108795A
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US2183219A
Cited
US2229722A
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US2245298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |