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Dzus fastener, from US Patent 1955740.png 491 × 737; 111 KB. Electrovoice-constant-directivity-horn-1975.jpg 672 × 537; 42 KB. Ellipsoid Patent.jpg 383 × 329; 86 KB. Entity-centric knowledge discovery Figure 3.png 2,743 × 2,383; 130 KB. Example of early Additional Improvement Patent from 1838.jpg 742 × 1,090; 36 KB.
The United States Patent and Trademark Office ( USPTO) is an agency in the U.S. Department of Commerce that serves as the national patent office and trademark registration authority for the United States. The USPTO's headquarters are in Alexandria, Virginia, after a 2005 move from the Crystal City area of neighboring Arlington, Virginia .
Patent Application Information Retrieval ( PAIR) is an online service provided by the United States Patent and Trademark Office to allow users to see the prosecution histories of United States patents and patent applications and obtain copies of documents filed therein. There are two services: Public PAIR, which allows the general public to ...
Patents #1–#50. U.S. patent 334,823 - Commutator for Dynamo Electric Machines - 1886 January 26 - Elements to prevent sparking on dynamo-electric machines; Drum-style with brushes. U.S. patent 335,786 - Electric Arc lamp - 1886 February 9 - Arc lamp with carbon electrodes controlled by electromagnets or solenoids and a clutch mechanism ...
1 (mandatory) The US patent number without commas; for numeric-only values, commas will be inserted by the template. While the USPTO parser ignores commas, other services (notably Google Patents) cannot handle them. For design or reissued patents prefix with D or RE, respectively; see Patent Search Help for the full list. 2 (optional) Link title.
A Bayer filter mosaic is a color filter array (CFA) for arranging RGB color filters on a square grid of photosensors. Its particular arrangement of color filters is used in most single-chip digital image sensors used in digital cameras, and camcorders to create a color image. The filter pattern is half green, one quarter red and one quarter ...
JPEG. JPEG ( / ˈdʒeɪpɛɡ / JAY-peg, short for Joint Photographic Experts Group) [2] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.
In the United States, determining whether a work has entered the public domain or is still under copyright can be quite complex, primarily because copyright terms have been extended multiple times and in different ways—shifting over the course of the 20th century from a fixed-term based on first publication, with a possible renewal term, to a ...