Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16L - Pipes; Joints or fittings for pipes; Supports for pipes, cables or protective tubing; Means for thermal insulation in general › F16L 45 - Pipe units with cleaning aperture and closure therefor
Patents for F16L 45 - Pipe units with cleaning aperture and closure therefor (304)
11/1976
11/30/1976US3994031 Flanged trap incorporating access fitting
10/1976
10/19/1976US3986740 Access door for ductwork
04/1976
04/20/1976US3951441 Adjustable plumbing fitting
04/20/1976US3951172 Adjustable cleanout plumbing fitting
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