U.S. federal trademark · Serial No. 77444824 · Reg. No. 3500437
An electromagnet sold as an integral component of a power drill, the electromagnet comprises a magnetically actuated switch for use with magnetic base power drills, the switch is operated by the presence or absence of a magnetic field such that if the power drill's magnet is not secured to a substantial enough piece of steel, then the magnetic field surrounding the switch is too weak to engage the switch and the operator is alerted
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.