Heidrich Thomas
Heieis Gerhard
Helgesson Kenneth
Helm P. Ralph
Helm Percy R.
Helminen Jouko
Hemmingsen Matthias
Henke James A.
Henke John R.
Hennekes Daniel M.
Henriksson Bjorn
Herbert F. Dalglish
Herdgraph Pty. Ltd.
Herold William M.
Herse Thomas
Hested Larry D.
Hetu Raymond
Heun Jurgen
Hexatechnique
Hh Intellitech Aps