I have already patented the 5 blade razor.
Wilkinson beat Gillette to the 4 blade (and are facing a large legal suit from Gillette).
I advise that you look at my 5 blade design instead. It shaves even closer than than either the three or four blade razor, and gives a man even more than the best a man can only ever dream about (TM). Only last night I went out on the town after an extremely close shave and the chicks just couldn't get enough! You should have seen them all queueing up to rub and kiss my chin
And before you think of the beating me to the six or seven blade razor forget it. Ive already superglued two mach 3's together and posted it to my solicitor for approval