Automatic leak-proof water inlet device for a water tank - Huang, So-Mei; Gruska, Ted (2019)
Keywords: FIXED CONSTRUCTIONS; FLUSHING VALVES THEREFOR; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; SEWERAGE; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; WATER SUPPLY; WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES