Patent US3370134A successfully refreshed from Google Patents.
US3370134A
Expired / Lapsed
US
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Fault recording arrangement
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1964-04-30
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Granted: 1968-02-20
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Johannesson Nils Olof
- 👤 Tronsli Sverre Normann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:53
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/40; H04B17/407; H04B17/409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |