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YORKSHIRE IMPERIAL PLASTICS

GB4 patents

Top patents by PatentIndex Score

US4428900AJan 31, 1984

Method of forming a pipe of oriented thermoplastics polymeric material

YORKSHIRE IMPERIAL PLASTICS41 citations80

US4340344AJul 20, 1982

Apparatus for manufacture of thermoplastics pipe

YORKSHIRE IMPERIAL PLASTICS27 citations78

US4323535AApr 6, 1982

Manufacture of thermoplastics pipe

YORKSHIRE IMPERIAL PLASTICS3 citations58

US4318681AMar 9, 1982

Manufacture of thermoplastics pipe

YORKSHIRE IMPERIAL PLASTICS1 citations48