Patent US4803334A successfully refreshed from Google Patents.
Patent US2837602A successfully refreshed from Google Patents.
US2837602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection system for selection of a junction line
Assignee: Telefonaktiebolaget LM Ericsson AB
•
Filing: 1952-02-21
•
Granted: 1958-06-03
•
Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Lundkvist Karl Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:30
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2369071A
Cited
US2369868A
Cited
US2629016A
Cited
US2618708A
Cited
US2588052A
Cited
US2532097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |