According to the text (and JDF1.6 spec) the DeviceFilter can also filter on Devices itself by including them (e.g. only for devices of a certain @DeviceClass or @DeviceID).
But they were not included in the table.
See table T.47 DeviceFilter in JDF1.6 spec.
The DeviceFilter element specifies the level of detail that is requested for the list of devices in the response.refines the list of devices that are requested to be returned. Only devices that match all parameters
of one of the Device resources specified in the DeviceFilter element are included.