Membership
Tour
Register
Log in
Key telephone system
Follow
Industry
CPC
H04Q2213/334
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
H
ELECTRICITY
H04
Electric communication
H04Q
SELECTING
H04Q2213/00
Indexing scheme relating to selecting arrangements in general and for multiplex systems
Current Industry
H04Q2213/334
Key telephone system
Industries
Overview
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Digital telephone system with terminals connected to a digital exch...
Patent number
5,402,483
Issue date
Mar 28, 1995
Siemens Aktiengesellschaft
Gunter Weinberger
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Terminal adapter pooling system for ISDN
Patent number
5,319,700
Issue date
Jun 7, 1994
Kabushiki Kaisha Toshiba
Hiroshi Mano
H04 - ELECTRIC COMMUNICATION TECHNIQUE