But apparently no young scientists presenting papers during the past decade were working on the same species beyond the three - year life span of the standard grant - funded project. (newscientist.com)
Most devices have about a two - to - three year life span for support, before they are phased out. (ibtimes.com)
Go for an extended convertible seat, an all in one with a 8 + year life span. (babieslounge.com)