ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,929, issued on Sept. 9, was assigned to BOMBARDIER INC. (Dorval, Canada).

"Aircraft pitch control system with electronically geared elevator" was invented by Thomas Ahn (Pincourt, Canada), Clinton Eric Tanner (Senneville, Canada), Thomas Nelson (Toronto) and Scott Black (Laval, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aircraft pitch control systems and methods are disclosed. In one exemplary embodiment, an aircraft pitch control system comprises a movable horizontal stabilizer and an elevator movably coupled to the horizontal stabilizer. The elevator is electronically geared to the horizontal stabilizer."

The patent was filed on Dec. ...