When was this type of shave knifes invented?

[Anonymous]

I am asking for this kind.

Google does not understand what I ask. So dont tell me to ask Google.

[WindAtMyBack]

If you mean the multi-blade type I don't know when it was invented, but I think it became popular in the 70s. They didn't have those when I started shaving.

A single blade safety razor was patented in the mid 1800s. Although it evolved over time from the straight razor.

[purplepoppy]

Try googling "safety razor" it's 1903 by Gillette