...invention or discovery thereof, or more than two years prior to his application, and not in public use or on sale in this country for more than two years prior to his application, unless the same is proved to have been abandoned, may, upon payment of the...
...discovery has been patented or described in a printed publication in this or any foreign country, or has been in public use or on sale in this country for more than 2 years prior to the date of filing in this country.*t (ES 4887; 35U.SC 32) AfPIJOATION 1.30 Requisites...
... in public use or on sale in this country for more than two years... 
