j.l. love invented a device you might have in your classroom

Question

did he actually ivent something in tne classroom

Answer 1

John Lee Love (1889–1931) invented a portable pencil sharpener, a.k.a. the "Love sharpener"  (http://www.biography.com/people/john-lee-love-21341825). According to that biography.com article, this device Love invented "has been in continuous use since it was first produced," so because the statement you're asking about includes the modal auxiliary might which gives the statement a wide range of possibility in the present time, I would say the answer to your question is "True."