DS

Douglas Swingley

SM Spears Manufacturing: 15 patents #2 of 15Top 15%
Overall (All Time): #313,166 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12140258 Sweep elbow pipe connector with optimized flow path 2024-11-12
12070640 Pipe fitting incorporating a spherical spin weld 2024-08-27
11585477 Sweep elbow pipe connector with optimized flow path 2023-02-21
11534640 Pipe fitting incorporating a spherical spin weld 2022-12-27
11473694 Valve operator assembly Wayne Spears, David Glover 2022-10-18
11149874 Valve operator assembly Wayne Spears, David Glover 2021-10-19
9611960 Cut-in fitting for connecting pipe 2017-04-04
8381655 Aluminum cartridge casing for rifles Robert Wayne Spears, II, Scott W. Miller, Mehroujan Shirvanian 2013-02-26
7426784 Compact fire sprinkler attachment insert Wayne Spears 2008-09-23
7303146 Pipe fitting with length adjustment 2007-12-04
7178557 CPVC drain waste and vent fittings 2007-02-20
6959880 Pipe fitting with length adjustment 2005-11-01
6899127 Non-vibrating ball check valve 2005-05-31
6290267 Cam-lock fitting 2001-09-18
6142173 High purity corrosion resistant butterfly valve Harry Bekeredjian, Jose Maria D. Magno, Jr., Garry L. Miller 2000-11-07