1
Ronald Schreiber, Robert Lalla: Method and device for discrete-time reactance measurement. Endress &plus Hauser &plus Co, Bose McKinney & Evans, October 9, 2001: US06300776 (6 worldwide citation)

For discrete-time reactance measurement the reactance is activated by a clocked generator device with an electric voltage, an electric current or an electric charge. A clocked analyzer device generates an output signal as a function of the reactance to be measured from discrete-time sampling values ...


2
Robert Lalla, Ronald Schreiber: Assembly for signal transfer between a receiving station and a transmitting station as well as for power supply of the transmitting station. Bose McKinney & Evans, March 9, 2004: US06703943 (4 worldwide citation)

In an assembly for signal transfer between a receiving station and a transmitting station and for power supply of the transmitting station where these two stations are connected via a two-wire line, an analog signal current variable between two limiting values is transmitted via this two-wire line, ...