Inventor having no team for a back-up (6)

I believe the answer is:

edison

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'inventor' is the definition.
(I know that Edison is a inventor)

'no team for a back-up' is the wordplay.
'team for' becomes 'side' (I can't explain this - if you can you should give a lot more credence to this answer).
'a back up' says the letters should be written backwards (I've seen 'backing up' mean this).
'no'+'side'='noside'
'noside' back-to-front is 'EDISON'.

'having' is the link.

Can you help me to learn more?

(Other definitions for edison that I've seen before include "Prolific inventor" , "Thomas ......, famous American inventor" , "Science master" , "Inventor of the carbon filament lamp, d. 1931" , "scientist" .)

I've seen this clue in The Globe and Mail.

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