ALEXANDRIA, Va., Oct. 21 -- United States Patent no. D1,097,833, issued on Oct. 14, was assigned to WHG PROPERTIES LLC (North Wales, Pa.).
"Bubble level" was invented by Adam Lauser (Coplay, Pa.) and William H. Geissele (Lower Gwynedd, Pa.).
The patent was filed on March 28, 2024, under Application No. D/934,947.
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