Can someone shed historic light on the way Fender installed frets?

[Frode Hansen]

Hello all, this is my first post.

I learned a few years ago that Fender used to install their frets sideways.

What I'd like to know is: when did they start this way of installing frets, and in what timespan did this occur?

Thank you for your time.

[Thomas James]

Here is my photo of one the current fretting stations at Fender's Corona CA, Facility. Thought you guys might like this... Tom