Patent Grant Single-Page TIFF Images (1790 - Present)
收藏OPEN DATA NETWORK2020-06-25 更新2024-10-26 收录
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资源简介：
Contains the images of each patent grant issued weekly (Tuesdays) from July 31, 1790 to present in Tagged Image File Format (TIFF) Revision 6.0 with CCITT Group 4 Compression (single-page TIFFs). Includes a separate weekly Certificates-of-Correction (C-of-C) file and a daily Certificates file.
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