ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,750, issued on Dec. 2, was assigned to BEACON GROUP INTERNATIONAL PRODUCTS LTD. (Epsom, Great Britain).
"Vacuum cleaning machines" was invented by Arthur Pallister (St Austell, Great Britain) and Michael Ching (Stade, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum machine comprising: a housing for receiving vacuumed matter and at least two removably attachable accessories; sensing means for detecting the accessories; a control circuit communicatively coupled with the sensing means; the sensing means being arranged to generate a first signal to the control circuit representative of the presence of a first accessory, a second signa...