 | 1899 - 616 lapas
...application has been filed in any other country or countries than those mentioned ; that to the best of bis knowledge and belief the invention has not been in public use or on sale in the United States nor described in any printed publication or patent in this or any foreign country for more than two... | |
 | 1896 - 428 lapas
...4. May a patent be obtained if the invention has been in use prior to the application ? A. Yes, if the invention has not been in public use or on sale in the United States for more than two years prior to his application an inventor may secure a valid patent therefor. The... | |
 | 1928 - 692 lapas
...(l>) That he does not know and does not believe that the same was ever before known or used. (c) That the invention has not been in public use or on sale in the United States for more than two years before application was filed, and (d) That the invention has not been described... | |
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... in public use or on sale in the United States more than one year prior to his application... 
