ALEXANDRIA, Va., Aug. 12 -- United States Patent no. D1,087,806, issued on Aug. 12, was assigned to Amtrol Licensing Inc. (West Warwick, R.I.).
"Sight glass" was invented by Nicholas W. Bolcon (Coventry, R.I.) and Bryan Varela (Cumberland, R.I.).
The patent was filed on Nov. 16, 2023, under Application No. D/916,961.
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