I would like a list of all people and institutions in the U.S.A. who
currently own a Learjet (Lear Jet).  Thank you.

If registration is by state, present Pennsylvania first.

I doubt you'll get an answer, because I would hazard a guess that even
Lear won't tell you their customer base.

Also, your List Price is too low for the work required to obtain a
list, if it exists.

Here's some contact information for Bombardier:
http://www.learjet.com/index.jsp?id=0_0&lang=en&file=/en/0_0/0_0_1_10_d.html

I am not a Google Answers Researcher.

I welcome price proposals from people willing to attempt the research.