What hides this stereogram?
Brain Teasers
[2276] What hides this stereogram? - Stereogram - 3D Image - #brainteasers #stereogram #3Dimage
2016-06-05
Artificial heart patentIn 1972, a U.S. patent was issued for a "Soft Shell Mushroom Shaped Heart" to the inventor Willem J Kolff of Salt Lake City, Utah (No. 3,641,591). He also invented an artificial kidney dialysis machine.« |
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