Naphtholactam dyes and optical recording medium containing these
Needled near netshape carbon preforms having polar woven substra
Needled near netshape carbon preforms having polar woven...
Non-linear resistance surge arrester disc collar and glass compo
Non-true-circular optical disk
Nonlinear optical thin film, optical recording medium using...
Nonlinear optical thin film, optical recording medium using...
Nonmetallic composite friction member
Novelty device
Nucleating agents for crystallized glasses, crystallized...