Potain Aspirating Syringe Outfit #468L Instruments, Stainless Steel Case & Original Box Becton, Dickinson & Co., circa 1931 Unique old doctor's kit made by Becton, Dickinson circa 1931. The patent number 1,742,497 is from 1930 and the patent number 1,793,068 is from 1931. The case and the instruments are stainless steel. The case measures 9" side-to-side x 3 1/4" front-to-back x 1 1/2" high. This outfit appears to be in great pre-owned condition; the rubber is somewhat dry from age. I'm listing a variety of unique, antique and collectible items. Not for medical use, strictly a antique collectable medical device for display.