US Patent Issued to Bulinfo Eood on Sept. 23 for "Device for opening or closing of a window or door and a system and method for controlling and management of the air quality of indoor premises" (Bulgarian Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,781, issued on Sept. 23, was assigned to Bulinfo Eood (Sofia, Bulgaria).

"Device for opening or closing of a window or door and a system and method for controlling and management of the air quality of indoor premises" was invented by Gabriel Todorov Todorov (Sofia, Bulgaria) and Krasimir Georgiev Slavchev (Sofia, Bulgaria).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a device for automatically opening or closing a window or a door and system and method for controlling and managing indoor air quality via the Internet. The system monitors indoor air parameters through sensors, and when these parameters reach predefined user ...