[sdiy] TB 303 patents

[Joachim Backhaus]

> -----Original Message-----
> From: Colin Fraser [mailto:colin at colinfraser.com]
> Sent: Dienstag, 8. Januar 2002 22:39
> To: 'R at F'; 'Synth-List'
> Subject: RE: [sdiy] TR909 clone PCB pictures
> 
> 
> > -----Original Message-----
> > From: owner-synth-diy at dropmix.xs4all.nl 
> > [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of R at F
> > Sent: 08 January 2002 20:05
> > To: Synth-List
> > Subject: Re: [sdiy] TR909 clone PCB pictures

> 
> > And I remember the TBS-303, which was a very good 
> > 303-clone... But then it
> > was discontinued because there was trouble with Roland (as I 
> > heard).
> 
> Doubt it - there are no patents on the 303. Maybe it was just 
> trademark
> infringement on the tb303 name ?
> But that's easily avoided.

Hmm, I think that Roland have had problems with the Moog ladder
filter patent because they used it.
But I think if there were Roland patents for other parts
they are shurely expired.

Or is this wrong?