Medical Prints Triple Framed (shown in black but also available in bronze)
Respirator
Insulin
Mortar and Pestle
Phrenology
Xray Tube
Ophthalmoscope (for examining eyes)
2Â patents – 1Â one for a new and improved version, 1Â for a battery dry handle.
Phoropter (for eye testing)
Invented by Henry DeZeng, who also trademarked the word Phoropter – a word that is now used for visual testers.
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