The diagrams in USA patent 2942516 resemble the Google Van and the Google Holodeck. The patent was filed in 1956 and granted in 1960. More information about the patent may be found at "A. Film L. A.".
http://afilmla.blogspot.com/2008/07/walt-and-ub-sharing-patent.html

http://ftp.afilm.com/blog/PAT_Walt%26Ub_01.jpg

http://ftp.afilm.com/blog/PAT_Walt%26Ub_02.jpg

[Image URLs updated – Tony]