Adrodd fel Amhriodol

Testun Gwreiddiol (Anodiad: EAW035043 / 883273)

' Michelin patented the world's first practical radial tyre in 1946. It was steel-braced, known as the 'X', and required major investment in steel cord production. The processes were novel and kept highly secret to ensure Michelin's lead in this revolutionary development. This was the first building, number 43, built to house the new processes. '

Dywedwch wrthym pam mae’r cynnwys hwn yn amhriodol *(gofynnol)

Dewis categori *(gofynnol)

Os ‘Arall’ rhowch fanylion (dewisol)

Eich enw (dewisol)

Eich cyfeiriad e-bost (dewisol)

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