Thomas’ office machines are on display at a thrift shop in Indianapolis, Indiana.
The machines were sold for $4,200 at an auction on Saturday.
The company says the machines were in service in the 1980s.
The bidding ended at $5.2 million, and Thomas has offered to sell them for $6,200.
The auction has been going on since Feb. 4.
Thomas says he plans to keep the machines for himself and his family.
Thomas’ brother, William, says he will donate the machines to the museum.
“I think it would be nice if it went to the Museum of Indoor Air Hockey or something like that,” William Thomas told the Associated Press.