PugJesus@lemmy.worldM to HistoryPorn@lemmy.worldEnglish · 1 year agoThe ISOLATOR, invention from 1925lemmy.worldimagemessage-square29fedilinkarrow-up1280arrow-down15
arrow-up1275arrow-down1imageThe ISOLATOR, invention from 1925lemmy.worldPugJesus@lemmy.worldM to HistoryPorn@lemmy.worldEnglish · 1 year agomessage-square29fedilink
minus-squareMassahud@programming.devlinkfedilinkEnglisharrow-up3·1 year agoThe grandfather of noise canceling headphones.
The grandfather of noise canceling headphones.