US2952728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated conductor for communication cables and the manufacturing method of the same
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1956-03-21
•
Granted: 1960-09-13
•
Expires: 1976-03-21
Abstract
No abstract record available.
Inventors
- 👤 Yokose Kyohei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
H; H01; H01B; H01B11/00; H01B7/00; H01B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US280366A
Cited
US303735A
Cited
US334850A
Cited
US469248A
Cited
GB198739A
Cited
US1800411A
Cited
US2361374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |