The Absent Minded Professor
Several sources state that this story was first published in “Malcolm’s Mystery Magazine,” March 1954, under the pseudonym John Van See. However, Foreverness seems to think the pseudonym J. A. Kavnnes was used. Maybe the author proposed J. A. Kavnnes and the publisher choose John Van See instead.
Republished in The World-Thinker and Other Stories, Spatterlight 2012.