postgreSQL licenseing - Mailing list pgsql-general

Hi,

We are planning to use the Postgre SQL in one of our commercial products.
I am aware that PostgreSQL is distributed under BSD licence. Can someone
please answer the following questions.

1) If we just ship the PostgreSQL binaries in our product(without source
code), do we need to include the BSD licence text anywhere?

2) Does PostgreSQL software makes use of any other libraries/softwares?
If yes, what are they?

3) Are there any patents applied/granted for PostgreSQL software? If yes,
what are the patent numbers?

Thanks in advance,
Sathish