ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,256, issued on Jan. 27, was assigned to MAKITA Corp. (Anjo, Japan).
"Power supply device and power supply system" was invented by Isao Yasuda (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply device may include a body case, a first device-side engaging part disposed on the body case, a first output part disposed on the body case; and a device-side connector configured to be connected with a battery-side connector of a first battery unit. The body case may include a bottom surface, and an upper surface configured to allow the first battery unit to be placed thereon. The first device-side engaging part may be configured to be ...