Because you're looking for "airplane manufacturer" and possibly large one. Though for example just a stolen throw from Google Mountain View campus you have Nort

Because you're looking for "airplane manufacturer" and possibly large one. Though for example just a stolen throw from Google Mountain View campus you have Northrop and Lockheed-Martin. I can't find the original webpage after 7 years, but the source was San Mateo County page related to county-owned airports, and it included all sorts of aviation industry (both flying and ground side)