DCHP-1 Online
patent inside(s) 
a sheet or sheets of newsprint having one side printed and the other left blank for printing by local newspapers.
- 1879 The Free Press patent insides did not arrive Saturday in time, so the Monday paper is double size.
- 1885 The Portage Liberal has changed its make up and is now a six column quarto, patent insides.
- 1903 It has just occurred to us that the reason we become so intolerably sick after a jamboree is because, unlike most other country editors, we don't use a patent inside.
- 1879 The Free Press patent insides did not arrive Saturday in time, so the Monday paper is double size.