What's the meaning of RSL in the RSL badminton sports brand?

Hi guys, there's this company named RSL International (from England in 1928) which manufactures badminton shuttlecocks, racquets, accessories and clothing apparels. I've been wondering about its meaning ages ago. Could you please tell me what does it stand for? Thanks!|||RSL stands for Reinforced Shuttlecocks Limited. I believe it was considered one of the better brands before WWII, when there were fewer badminton equipment manufacturers. I used a few cases of their shuttles in the mid-1980s, and the quality was definitely below average for the price. Cheers.