US3290451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for a transmission system
Assignee: US Philips Corp
•
Filing: 1963-03-11
•
Granted: 1966-12-06
•
Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Duimelaar Jasper Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:32
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/18; H04B; H04B17/00; H04B17/40; H04B17/401; H04B17/402; H04B17/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A TRANSMISSION SYSTEM FOR THE TRANSMISSION OF INFORMATION SIGNAL BETWEEN FIRST AND SECOND TERMINAL STATIONS, COMPRISING A TRANSMISSION LINE EXTENDING BETWEEN SAID TERMINAL STATIONS, SAID TRANSMISSION LINE COMPRISING A PLURALITY OF AMPLIFIER STAGES, AND MEANS FOR TESTING SAID LINE TO DETERMINE THE LOCATION OF FAULTS, SAID TESTING MEANS COMPRISING A SEPARATE OSCILLATOR CONNECTED TO EACH OF SAID AMPLIFIER STAGES, A SOURCE OF VARIABLE DIRECT VOLTAGE, THRESHOLD CIRCUIT MEANS CONNECTING SAID SOURCE TO SAID OSCILLATORS WHEREBY SAID OSCIALLATORS ARE SUCCESSIVELY RENDERED OPERATIVE AS THE VOLTAGE OF SAID SOURCE IN INCREASED, AND SEPARATE THRESHOLD MEANS CONNECTED TO EACH OSCILLATOR WHEREBY EACH OSCIALLATOR IS RENDERED INOPERATIVE BEFORE THE NEXT SUCCEEDING OSCIALLATOR IS RENDERED OPERATIVE AS THE VOLTAGE OF SAID SOURCE IS INCREASED.
Claim 2
Dependent Claim
119 words
A TRANSMISSION SYSTEM FOR THE TRANSMISSION OF INFORMATION SIGNAL BETWEEN FIRST AND SECOND TERMINAL STATIONS, COMPRISING A TRANSMISSION LINE EXTENDING BETWEEN SAID TERMINAL STATIONS, SAID TRANSMISSION LINE COMPRISING A PLURALITY OF AMPLIFIER STAGES, AND MEANS FOR TESTING SAID LINE TO DETERMINE THE LOCATION OF FAULTS, SAID TESTING MEANS COMPRISING A SEPARATE OSCILLATOR CONNECTED TO EACH OF SAID AMPLIFIER STAGES, A SOURCE OF VARIABLE DIRECT VOLTAGE, THRESHOLD CIRCUIT MEANS CONNECTING SAID SOURCE TO SAID OSCILLATORS WHEREBY SAID OSCIALLATORS ARE SUCCESSIVELY RENDERED OPERATIVE AS THE VOLTAGE OF SAID SOURCE IN INCREASED, AND SEPARATE THRESHOLD MEANS CONNECTED TO EACH OSCILLATOR WHEREBY EACH OSCIALLATOR IS RENDERED INOPERATIVE BEFORE THE NEXT SUCCEEDING OSCIALLATOR IS RENDERED OPERATIVE AS THE VOLTAGE OF SAID SOURCE IS INCREASED.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |