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Patent US2456704A successfully refreshed from Google Patents.
US2456704A
Expired / Lapsed
US
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Apparatus for testing and marking insulated conductors
Assignee: AT&T Inc
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Filing: 1945-05-30
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Granted: 1948-12-21
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Expires: 1965-05-30
Abstract
No abstract record available.
Inventors
- 👤 George E Henning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:00
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/34; H01B13/342
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1919802A
Cited
US2087783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |