Born near Mason-Dixon in
Antrim Township, Pennsylvania, on January 26, 1921, John Landis Grove was a son of the Rev. John Franklin Grove (1890–1986) and Almeda (Landis) Grove (1891–1964). A 1938 graduate of Greencastle High School in Greencastle, Pennsylvania, he subsequently studied engineering at
Drexel University. He and his older brother, Dwight, spent their formative years building farm wagons in
Shady Grove, Pennsylvania. During
World War II, Grove married Cora Isabelle Wagner and served as a member of the medical corps in the
United States Army. After returning home from the war, Grove co-founded the
Grove Manufacturing Company with his brother, Dwight, in 1946. Needing a method of moving heavy steel for the wagons, Grove used his knowledge of hydraulics to develop a rudimentary crane. Dealer interest in Grove's crane inspired his decision to produce the first mobile hydraulic industrial cranes. That decision quickly transformed the company from a manufacturer of farm implements to a world leader in the crane market. In the late 1950s, Grove's work with Paul K. Shockey developed an all-steel hydraulic extension ladder for use on fire trucks. Within Grove Manufacturing, John Grove oversaw the crane division while his brother, Dwight, dealt with farm equipment operations. Rapid growth, primarily due to demand for the hydraulic cranes, resulted in the company expanding to over 1,000 employees by 1967. That same year, against John Grove's wishes, Grove Manufacturing was sold to the Walter Kidde Company. Internal strife between the brothers, and possible health issues, prompted John Grove to leave the company in 1968. In 1969, John Grove and Paul Shockey launched Condor Industries, and began manufacturing self-propelled, telescoping hydraulic aerial 'cherry-picker' style lifts, primarily for the aircraft maintenance industry. In 1973, Condor Industries was renamed
JLG Industries (JLG for John L. Grove). With innovative products and designs, such as mounting lifts on track-driven frames, locating the crane operators cab on the turret, less expensive truck mounted cranes, and scissor-type lifts, JLG Industries grew to over 700 employees and attained 30 million in sales by the late 1970s. In 1987, he delivered the Commencement Address at Shippensburg University, during which he told the graduating class: "Carry forward your responsibilities to society in order to leave this world better than you found it. Don't allow wealth to stop your caring for others. Don't allow your head to grow larger than your heart. Be willing to sacrifice for things that you desire and in which you believe, and don't ask more of others than you would of yourself." His company, JLG, became in 2006 part of
Oshkosh Corporation. By the end of his career, John Grove held over 60 patents. ==Illness, death and interment==