Patent US2589169A successfully refreshed from Google Patents.
US2589169A
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Method of insulating conductors
Assignee: AT&T Inc
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Filing: 1946-04-12
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Granted: 1952-03-11
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Expires: 1966-04-12
Abstract
No abstract record available.
Inventors
- 👤 Charles C Veale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/088; H01B3/10; H01B3/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US477732A
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US2413441A
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US806574A
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US1651474A
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US1783740A
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US2332424A
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US2413549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |