Hindu Armour and the Katar?

[fernando]

There is this book written by Rainer Daehnardt, someone assumedly within this Indian weaponry and armor subject, from which i would like to interpreter a little part:
The Pata, like the Katar, are weapons of Hindu invention.
Its named after the Pathans, a subdivision of the Xatrias, a warrior cast. It was much used in the Marathas Kingdoms, and by Sikhs and Rajputs. Patas must have appeared by the first quarter of the XVI century, with a major use of european blades ... a small percentage captured from the discoverers, but mainly the introduction of "ilegal length" european blades brought by Venetians and Portuguese. This way a well handled Pata could keep a standard lenght rapier out of reach. For the same reason it also used by cavalry.
The Pata can be considered a Katar turned into a sword. The handle system is precisely the same. There is no doubt it was the ideal type of sword, it just didn't become more popular, as its handling needed some school.
Among several pictures, we can see ( so he aledges ) the oldest existing Pata, one of the beg. XVI century, with a XV-XVI cent. Navigators blade, and an example used by Hindus that served as auxiliary Portuguese troops, with a blade inscription devoted to the Portuguese King, XVIII century.
I thought this could help enlightning the provenance of both these weapons.
fernando