Is there a list of RF generators with 4 RF electrode outputs?

Here is a list of RF generators with 4 channels.

• Neurotherm NT2000ix RFA Generator
• Stryker Multigen RF Generator
• Stryker Multigen 2 RF Generator
• Halyard Pain Management RF Generator
• Baylis PMG 115 Radiofrequency Generator
• Kimberly Clark Lesion Generator
• Cosman G4 RF Generator