Bison Bede Stairlifts Below is a list of obsolete models from Bison Bede Stairlifts that we service, repair and maintain: – Bison Bede ‘Contour’ & ‘Contour Elite’ – Bison Bede ‘Classic’ – Bison Bede ‘Compact’ A/C & D/C – Bison 50 – Bison 80