How to add our favourite search engine in Firefox Search bar

How to add our favourite search engine in Firefox Search bar ??

Ya we can add the favourite search bar to firefox search bar(inbuilt)

for that first we must instal the addon(https://addons.mozilla.org/en-US/firefox/downloads/file/48564/add_to_search_bar-1.8-fx.xpi)

step 2: restart the fox

step 3. we cansee with an example of  adding a patent number search bar to firefox search bar

a) right click on the textbox(search bar) in our Uspto number searching link(http://patft.uspto.gov/netahtml/PTO/srchnum.htm)

b) a dialog box appears as shown below. Give name, and ur favourite icon and click ok.

c) Now search a patent number directly to the search bar in the fox

Enjjoy customized foxseach bar