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"Patent agents, legal advisers and Gugliolmo Marconi's breakthrough in wireless telegraphy" Patent Breach for Guns Patent Microscopes Etc. Specifications 1852-1885 "Patent Pantoscopic Spectacles" Patent place "Patent Place" Patent specification : improved container for rat poison bait Patent Specification 566,691. Provisional Specification: Apparatus for Utilizing Energy Exerted by a Mass of Water Subject to Variations of Level Patent specifications relating to microscopes, 1946-1953. Patents for Inventions in the Netherlands during the 16th, 17th and 18th Centuries: with notes on the historical development of technics Patents for Inventions. Abridgements of Specifications. Class 139, Watches, Clocks, and Other Timekeepers Patents of Invention: Origin and Growth of the Patent System in Britain Pathologiae Cerebri, et Nervosi Generis Specimen. In quo agitur De Morbis Convulsivis, et de Scorbuto "Patra and the Paper Industry" "Patronage and Privilege in Education: A Devon Boy goes to School, 1798" "Patronage and Publishing: Journals of Microscopy 1839-1989" Patrons, Artisans and Instruments of Science, 1600-1750 "Paul Crespin, Goldsmith" "Paul Rudolph's Carl Zeiss Photographic Lenses" "Paul Tannery"
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