I was under the impression that Feather blades aka Miles Accu edge, (Sakura
Finetek) were exclusively made for Sakura, and had no other name. 

At the risk of being picky, prompted me to look at the packaging 

Accu-Edge is trademarked, and manufactured for Miles (Sakura Finetek) by
the Featehr Safety Razor Co, LTD, Medical Division and made in Japan.

I think these are exclusive products for Sakura.

 
Gayle Callis
Veterinary Molecular Biology
Montana State University
Bozeman MT 59717-3610
406 994-4705
406 994-4303