Schreibmaschinen-Schoner

Schreibmaschinen-Schoner "TYP-FIX" - Kennt das jemand aus aktiver Nutzung?

Typewriter conserver
"TYP-FIX"
(protected by law)
For a beautiful, clean typeface
conserves the roller
conserves the typebars
conserves the ribbon
conserves the carbon paper
for a light, elastic type clack
for a longer machine life
prevents paper folding ("Rumpfen")
prevents "Ausschlagen" (cutting) of writing paper

Not to be confused with usual roller conservers
Does anyone know this from active using?