^timtiik %mmtmu [February 22, 1873. 124 … Publishers 245 Broatlway, N. York THE ten year patents may be extended to the term of fifteen On an application for Design (3^ years) $10 t^~Send for Catalogue of all books years. The formalities for extension are simple and not on Architecture, Agriculture, Field On an application for Design (7…
Patents · Iron · Boiler · Feet · Improved · Scientific American · Consists · Fire engine · Steam engines · Floating fire · Cast Iron · Horse power · Science record · Narrow gage · Floating station · Patents granted
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