Pneumatic plug for pipelines

Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Fitting

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D03627136

REFERENCES:
patent: 3902528 (1975-09-01), Tartabini et al.
patent: 3908682 (1975-09-01), Thompson
patent: 4614206 (1986-09-01), Mathison et al.
patent: 5199463 (1993-04-01), Lippiatt
American Logiball Inc., Logiball-Reinforced Rubber Multi-size Plugs, Product Sheet, 1 page.
Cherne Industries Incorporated, Cherne Petro Plug, 1991, Product Sheet, 1 page.
Cherne Industries Incorporated, Cherne Neoprene Factory Replaceable Sleeve Multi-Size Muni-Ball Plugs, 1991, 1 page.

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