FIGURE B.28 Number of patents related to the keyword Supersonic filed at five patent offices, for the years 1961-2009, according to data from the Scopus database. The search is refined by the word Aerospace.

FIGURE B.28 Number of patents related to the keyword “Supersonic” filed at five patent offices, for the years 1961-2009, according to data from the Scopus database. The search is refined by the word “Aerospace.”



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