Document Type and Number:
Japanese Patent JPH0219677
Kind Code:
Y2
Application Number:
JP4335683U
Publication Date:
May 30, 1990
Filing Date:
March 28, 1983
Export Citation:
International Classes:
F16L59/12; F16L7/00; F16L59/06; F16L59/147; (IPC1-7): F16L59/147
Next Patent: JPH0219678