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The description and use of nairnes patent electrical machine with the addition of some philosophical experiments and medical observations the eighth edition nairne edward on amazoncom free shipping on qualifying offers the description and use of nairnes patent electrical machine with the addition of some philosophical experiments and medical observations. The description and use of nairnes patent electrical machine with the addition of some philosophical experiments and medical observations on amazoncom free shipping on qualifying offers the description and use of nairnes patent electrical machine with the addition of some philosophical experiments and medical observations. The description and use of nairnes patent electrical machine with the addition of some philosophical experiments and medical observations 1796 printed for and sold by edward nairne optical mathematical and philosophical instrument maker . Chapter 9 patents of addition 54 patents of addition 1 subject to the provisions contained in this section where an application is made for a patent in respect of any improvement in or modification of an invention described or disclosed in the complete specification filed therefor in this act referred to as the main invention and the applicant also applies or has applied . In addition such claims will be limited by the scope of the written description or invalidated as being indefinite under 112b if insufficient structure is described