US3084230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for testing telephone lines
Assignee: Individual
•
Filing: 1957-05-10
•
Granted: 1963-04-02
•
Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Peter M Buhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:27
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/26; H04M3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A SYSTEM FOR TESTING TELEPHONE LINES IN THE FIELD INCLUDING A PORTABLE UNIT COMPRISING: MEANS FOR TAPPING AT A POINT REMOTE FROM A STATION TEST BOARD, A TELEPHONE LINE THAT HAS NOT BEEN IDENTIFIED; VISUAL INDICATING MEANS RESPONSIVE TO CHANGES OF ELECTRICAL POTENTIAL IN SAID LINE TO INDICATE WHETHER SAID LINE IS IN SERVICE; SAID INDICATING MEANS BEING IN CIRCUIT WITH SAID TAPPING MEANS; ELECTRICAL SIGNAL PRODUCING MEANS; AND MEANS FOR CONNECTING SAID SIGNAL PRODUCING MEANS TO SAID LINE THROUGH SAID TAPPING MEANS.
Claim 2
Independent Claim
83 words
A SYSTEM FOR TESTING TELEPHONE LINES IN THE FIELD INCLUDING A PORTABLE UNIT COMPRISING: MEANS FOR TAPPING AT A POINT REMOTE FROM A STATION TEST BOARD, A TELEPHONE LINE THAT HAS NOT BEEN IDENTIFIED; VISUAL INDICATING MEANS RESPONSIVE TO CHANGES OF ELECTRICAL POTENTIAL IN SAID LINE TO INDICATE WHETHER SAID LINE IS IN SERVICE; SAID INDICATING MEANS BEING IN CIRCUIT WITH SAID TAPPING MEANS; ELECTRICAL SIGNAL PRODUCING MEANS; AND MEANS FOR CONNECTING SAID SIGNAL PRODUCING MEANS TO SAID LINE THROUGH SAID TAPPING MEANS.
References Cited (Backward Citations)
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Cited
US1707051A
Cited
US1868960A
Cited
US2133384A
Cited
US2806203A
Cited
US2799739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |