Remove duplicates from PHP array but ignoring one parameter

I have an array comprised of PHP objects as such.

$objects[0] => $object->type => 'President'
               $object->name => 'Joe Blogs'
               $object->address => '123 Harry Street'

$objects[1] => $object->type => 'Secretary'
               $object->name => 'Joe Blogs'
               $object->address => '123 Harry Street'

$objects[2] => $object->type => 'Treasurer'
               $object->name => 'Jane Doe'
               $object->address => '456 Upton Street'

I would like to ignore the 'type' parameter and end up with

$objects[0] => $object->type => 'President'
               $object->name => 'Joe Blogs'
               $object->address => '123 Harry Street'

$objects[2] => $object->type => 'Treasurer'
               $object->name => 'Jane Doe'
               $object->address => '456 Upton Street'

I have tried a few difrent things one of which was to unset the parameter "type using a foreach loop and then trying to reset it but I wasn't sure how to tie the two indexes together to reset them. Another was trying to use the union in the select command but that wasn't working 100% correctly either.

I am just not sure how to best manage the type parameter