Helmut Burger

Battery-powered drill

Mode selection switch for a combination electrical hand tool device

Hand-held electrical combination hammer drill

Device for collecting drilled material and dust

Universal electric motor for hand-held tool devices

Revolutions per minute regulation device for a hand-held electric tool and method of its manufacture

Attachment element for securing a depth stop on a hand-held power tool

Hand motor-driven combined hammer device

Electric-motor-driven hand-held apparatus

Universal motor with a device for removing dust