{"@type": "dcat:Dataset", "accessLevel": "public", "contactPoint": {"@type": "vcard:Contact", "fn": "CT State Library", "hasEmail": "mailto:no-reply@data.ct.gov"}, "description": "Connecticut Patents 1800-1890\n\nThis list was compiled by Museum of Connecticut History staff in the 1990s, and lists all patents by Connecticut inventors between the years of 1800-1890. This period spans a time of incredible industrial growth and inventiveness in Connecticut, and the Yankee ingenuity on display in these patents helped make the state one of the premier industrial centers of the nation and the world.\n\nMany of the pre-1836 patents listed here are only known because of annual lists of patents or patent digests that were published by the Patent Office. The actual records were destroyed in a fire in 1836, and many were never reconstructed. All of the pre-1836 patents are known as the \u201cX-Patents,\u201d and those that have been recovered were given patent numbers beginning with the letter X. \n\nPatents up to this time had not actually had numbers of any kind, they were simply known by date and title. About five months before the fire, the Patent Office began numbering their patents; this system, now up to seven digits, is still in use today.\n\nPatents found in this dataset can be found using the <a href=\u201dhttps://www.uspto.gov/patents/search/patent-public-search\u201d>Patent Public Search tool</A> on the U.S. Patent Office\u2019s website. The easiest way to locate a patent is to enter the seven-digit serial number into the basic search.\n\nThe Connecticut Patents 1800-1890 dataset contains names of inventors, assignees if relevant (inventors could \u201cassign\u201d ownership of patents to another person or entity), descriptions of the invention, patent numbers (if available), and date of issue. It also contains a two-digit class code that corresponds to a general subject area. The subjects are:\n\n01 Firearms, guns, cannons, etc.\n02 Metallurgy, metalworking, etc.\n03 Woodworking, sawmills, etc.\n04 Weaving, sewing, looms, etc.\n05 Steam boilers, engines\n06 Railroads\n07 Ships, boats, canals\n08 Clothing\n09 Agriculture\n10 Hardware, tools, etc.\n11 Tanning\n12 Rubber\n13 Musical instruments\n14 Medical\n15 Foods and cooking\n16 Business and labor\n17 Clocks\n18 Fireplaces, stoves, furnaces, etc.\n19 Lanterns, lamps, and lighting\n20 Furniture\n21 Household items\n22 Doors, windows, drawers, trunks, etc.\n23 Grinding mills\n24 Stonemasonry, mining, etc.\n25 Vehicles, non-motorized\n26 Chemical processes? Explosives, distilling, paintmaking, etc.\n27 Plumbing, pipes, hoses, etc. and water-powered devices\n28 Printing, bookmaking, and paper\n29 Engines, coolers, elevators, pneumatics, etc.\n30 Ivory\n31 Military equipment (non-weapons)\n32 Sewing machines\n33 Toys, games, and leisure (includes bicycles)\n34 Equipment for horses\n35 Photography\n36 Glassware\n37 [doesn't exist]\n38 Electricity and electronics\n39 Telephones\n40 Fire safety\n41 Construction\n42 School equipment\n43 Art", "distribution": [{"@type": "dcat:Distribution", "describedBy": "https://data.ct.gov/api/views/2yhr-esw9/columns.json", "describedByType": "application/json", "downloadURL": "https://data.ct.gov/api/views/2yhr-esw9/rows.json?accessType=DOWNLOAD", "mediaType": "application/json"}, {"@type": "dcat:Distribution", "describedBy": "https://data.ct.gov/api/views/2yhr-esw9/columns.rdf", "describedByType": "application/rdf+xml", "downloadURL": "https://data.ct.gov/api/views/2yhr-esw9/rows.rdf?accessType=DOWNLOAD", "mediaType": "application/rdf+xml"}, {"@type": "dcat:Distribution", "describedBy": "https://data.ct.gov/api/views/2yhr-esw9/columns.xml", "describedByType": "application/xml", "downloadURL": "https://data.ct.gov/api/views/2yhr-esw9/rows.xml?accessType=DOWNLOAD", "mediaType": "application/xml"}, {"@type": "dcat:Distribution", "downloadURL": "https://data.ct.gov/api/views/2yhr-esw9/rows.csv?accessType=DOWNLOAD", "mediaType": "text/csv"}], "identifier": "https://data.ct.gov/api/views/2yhr-esw9", "issued": "2024-08-16", "keyword": ["connecticut state library", "csl", "ct state library", "patents"], "landingPage": "https://data.ct.gov/d/2yhr-esw9", "modified": "2024-08-16", "publisher": {"@type": "org:Organization", "name": "data.ct.gov"}, "theme": ["History"], "title": "Patents by Connecticut Inventors 1800-1890"}