US3573370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for the transmission of telegraphy and data signals
Assignee: Individual
•
Filing: 1969-03-13
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Granted: 1971-04-06
•
Expires: 1989-03-13
Abstract
Abstract A circuit arrangement for the transmission of telegraphy and data signals at any speed over a line in a direct current transmission system wherein the internal resistances of the transmitters and receivers are mismatched low-ohmically to the line. At least one end station has an internal resistance that is further mismatched extremely low-ohmically to the line.
Inventors
- 👤 Hans Blauert
- 👤 Ernst Schuhbauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:56
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/14; H04L5/1407; H04L25/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
57 words
A circuit arrangement for the transmission of telegraphy and data signals at any speed over a line in a direct current transmission system wherein the internal resIstances of the transmitters and receivers are mismatched low-ohmically to the line comprising at least one end station having an internal resistance that is further mismatched extremely low-ohmically to the line.
Claim 2
Dependent Claim
57 words
A circuit arrangement for the transmission of telegraphy and data signals at any speed over a line in a direct current transmission system wherein the internal resIstances of the transmitters and receivers are mismatched low-ohmically to the line comprising at least one end station having an internal resistance that is further mismatched extremely low-ohmically to the line.
Claim 3
Dependent Claim
39 words
A circuit arrangement as recited in claim 1 wherein the internal resistance of the transmitter of at least one end station has a considerably lower value than the internal resistance of the receiver of at least one end station.
References Cited (Backward Citations)
US1762952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |