Main unit of handheld vacuum cleaner

1 . 1 is a front view of a first main unit of a handheld vacuum cleaner;

1 . 2 is a back view thereof;

1 . 3 is a left view thereof;

1 . 4 is a right view thereof;

1 . 5 is a top view thereof;

1 . 6 is a bottom view thereof;

1 . 7 is a front, left, top perspective view thereof;

1 . 8 is a rear, right, top perspective view thereof;

1 . 9 is a rear, right, bottom perspective view thereof.

2 . 1 is a front view of a second main unit of handheld vacuum cleaner;

2 . 2 is a back view thereof;

2 . 3 is a left view thereof;

2 . 4 is a right view thereof;

2 . 5 is a top view thereof;

2 . 6 is a bottom view thereof;

2 . 7 is a front, left, top perspective view thereof;

2 . 8 is a rear, right, top perspective view thereof; and

2 . 9 is a rear, right, bottom perspective view thereof.