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| Number | Title | Issue Date |
| 3982564 | Heat recoverable article A heat recoverable closure article and a method for covering a conduit junction having at least three arms. The article comprises a radially heat-shrinkable tubular member, or a member in sheet form having its opposite edge regions held together to form t... | 09/28/1976 |
| 3960181 | Article for covering various pipefittings A cover for covering elbows or angles in tubular conduits formed in the shape of a convoluted sheet of material such as polyethelene, and shaped to form a first stable configuration state fitting part way around the object to be covered. Opposite ends of ... | 06/01/1976 |
| 3954288 | Pipe fitting with self-testing seals and method A split coupling for repairing, hot tapping, or joining pipelines, and particularly underwater pipelines, is disclosed. The coupling comprises a pair of members each having semicylindrical inner surfaces and a pair of faces adapted to oppose the faces of ... | 05/04/1976 |
| 3944260 | Pipe repair fittings Repair fittings are provided sealing ruptures or leaks in existing piping systems. The fittings are economical to produce and can be simply installed to provide effective and reliable leak protection. The fittings are of the gasket type and include a pair... | 03/16/1976 |
