Assignee
INVENTA ELECTRONICS
TW8 patents
Top patents by PatentIndex Score
US5216709AJun 1, 1993
Electronic device for providing information related to an input telephone number
INVENTA ELECTRONICS37 citations91
US4881260ANov 14, 1989
Automatic telephone answering device with multiple outgoing messages and selecting means
INVENTA ELECTRONICS8 citations72
US4802208AJan 31, 1989
Hot-line device for telephone sets
INVENTA ELECTRONICS8 citations68
US4794640ADec 27, 1988
Switching control apparatus for intercom-telephone sets
INVENTA ELECTRONICS10 citations68
US4644106AFeb 17, 1987
Apparatus for timely controlling the sound characteristic of a signaling means of a voice communication device
INVENTA ELECTRONICS13 citations68
US4847895AJul 11, 1989
Controllable annunciator using ring signal
INVENTA ELECTRONICS3 citations61
US4856056AAug 8, 1989
Apparatus for timely controlling the sound characteristic of a signaling means of a voice communication device
INVENTA ELECTRONICS4 citations57
US4835625AMay 30, 1989
Method of recording timing data generated by a central processing unit onto a tape for digital display
INVENTA ELECTRONICS0 citations51