Fecha de registro inicial: {!! Form::text('serie[ini]', null, ['class' => 'form-control', 'placeholder' => 'DD-MM-AAAA', 'id' => 'ini', 'name' => 'ini', 'required' => true, 'maxlength' => 10, 'size' => 10]) !!}

Fecha de registro final: {!! Form::text('serie[fin]', null, ['class' => 'form-control', 'placeholder' => 'DD-MM-AAAA', 'id' => 'fin', 'name' => 'fin', 'required' => true, 'maxlength' => 10, 'size' => 10]) !!}