US2756394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay cables
Assignee: Hackethal Draht Kabel Werke AG
•
Filing: 1953-07-14
•
Granted: 1956-07-24
•
Expires: 1973-07-14
Abstract
No abstract record available.
Inventors
- 👤 Sieven Josef
- 👤 Scheffler Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:46
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1895; H03; H03H; H03H7/00; H03H7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US297176A
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US997498A
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GB324099A
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US1889380A
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US2260024A
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US2387783A
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US2457806A
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US2583855A
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US2581765A
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US2643130A
Cited
US2683673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |