Paper handling apparatus for facsimile receiver
PCM communication system with pulse deletion
Pilot signal extracting circuitry
Plural channel communications system
Polygraphic encryption-decryption system
Portable computer apparatus having a display capable of displayi
Power saving circuit for use with a converter circuit in a telep
Print rate control system
Print-on-the-fly pager
Printer and control circuit therefor
Printer head for serial dot printer
Printing head
Privacy communication system employing time/frequency transforma
Process and an arrangement for reducing the redundancy of binary
Process and arrangement for selectively transmitting predetermin
Process and device for the nonlinear equalization of digital sig
Process and system for transmission of signed messages
Process for interception-protected frequency band compressed tra
Process for operating sub-zones of a digital T.D.M. telecommunic
Processing of encrypted voice signals