| Name | Country | Region | Address |
|---|---|---|---|
| Robert Clements & Irene Clements | USA | ||
| Robert Clements & Irene Clements & Javier Martinez | USA | ||
| Robert Estill Courtney Jr. | USA | ||
| Robert Eylmann | Germany | ||
| Robert Schaedle | USA | ||
| Robert True | USA | ||
| Robert und Veronika Moser | Austria | ||
| Robert van Driel (Hidepl) | |||
| Roberta Osborne&Kelly Osborne | Canada | ||
| Robin Jezek | Czech Republic |