1963: Mouthpiece "Strathon" for saxophone and clarinet. 

1985: Patent for all Strathmann-flutes. 

1989: Adjustable core gap for Strathmann-flute mouthpiece. 

1996: Frequency adjuster for mouthpiece. 

1996: Swiveling suspension for musical instruments. 

1997: Ball joint with felt embedding for musical instruments. 

Licensee 

Flute mouthpiece: 

• Mollenhauer
• Marten Helder (France) 

• B&S Saxophonfabrik: Model Codera