Sentence:  All research within the United States contracted for , sponsored , cosponsored , or authorized under authority of this Act , shall be provided for in such manner that all information , uses , products , processes , patents , and other developments resulting from such research developed by Government expenditure will ( with such exceptions and limitations , if any , as the Secretary may find to be <WSD>necessary</WSD> in the interest of national defense ) be available to the general public . 
Meaning of the word marked with <WSD> tags:  absolutely essential