His chairs were used in the ready room for these missions and can be seen in the movie "Apollo 13". The Secret Service bought 50 of them for President Lyndon Baines Johnson as a Christmas gift. A Life magazine photo of President Johnson, post gall bladder surgery, has the President lifting his shirt and showing his scar while sitting in one of these chairs. The Presidential Seal was embossed on these chairs with one currently in the Smithsonian Institution and another at the Lyndon Baines Johnson Library and Museum. With over 300 patents, Caldemeyer added the foot lift rest, heated seating and massage features to this chair and had the patent for the first entertainment center.