Hi erlikhan,
A number of British millitary pattern swords were produced in India....I think Jim McDougall would be the man to answer your question more fully. Hopefully he will see this thread.
Also Lohar, was an area that was mined for quality iron ore....but, so far, I can find no reference to swordsmithing or forging in the area. Perhaps the steel produced from the Lohar iron ore was considered high quality...perhaps the stamp on the blade refers to quality and not where the sword was manufactured
I also found this..... which may be relavent
http://en.wikipedia.org/wiki/Gadia_Lohar
And this....
".....LOHAR - Itinerant blacksmiths who used to be great warriors making their own weapons. Legend has it they originated in Chittorgarh but were defeated in the siege of that city in 1308. They then became nomadic...."