Reproduction of a patent grant. This particular one happens to be dedicated to the free use of the people

Patent official, patent record files. Files of patents of which 2,180,00 have been issued. These files extend over 50 miles in total length and are kept in air conditioned portion of the building, washed air keeps paper from iridizing. Another old patent of drawing without the specification. This de

Patent of John Fitch steamboat, Natl. Museum

Patent Office employee pointing to copies of first patent granted after 1836 when patent laws were rewritten

Early knitting machine brought out to show stocking manufacture in 1840. Washington, D.C., Feb. 9. Robert Lawson, lecturing today at the Commerce Department, demonstrated the basic model for making stockings for milady in 1840. The model has been enlarged and improved upon, but is fundamentally the

Government discovers method to preserve film. Scratch resistance, film, particulary the emulsion side, may become damaged through scratching. D. Levinsky of the Bureau is using an instrument which tests the resitance of a film by measuring the width of a scratch produced by a diamond point under a g

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New process expected to revolutionize map making. Washington, D.C., March 21. A new machine just designed and perfected by John Braund, Cartographer for the U.S. Coast and Geodetic Survey, by which relief maps can be made showing all the details of topography in a form true to nature, is expected to

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