Patent dating chart
wherein the set of heuristic tests includes accepting a partition area in the flood-filled image having a ratio of its partition area to the number of pixels contained therein that exceeds a selected minimum ratio.The United States patent number for each year is the first patent issued that calendar year.These dates are a handy reference that you may find useful for figuring out when an item was first produced.For example, if you find something with a patent number of 1,941,448 on it, you will find in the chart below that it was patented in 1933. The following table displays the calendar year along with the first corresponding document number issued in each year for selected patent document types (utility, design, plant, and reissue patents and statutory invention registrations) (*) The current patent numbering system began with a patent issued on July 13, 1836.Prior to that date, an estimated 9,957 patents had been issued.Always remember, patent date is only when something was patented, not when it was actually made, many items were manufactured for many years after it was patented.The number for each year is the first design patent issued that year. Design patents refer to any new ornamental design for an item.
Generally, the set of heuristic tests are employed to automatically reject regions that are unlikely to belong to a Mac Beth color checker chart and to cluster the remaining regions that are likely to belong to a Macbeth color checker chart.A Mac Beth color checker chart automatic detection method is also provided.a testing unit that tests the flood-filled image to provide a modified flood-fill image, wherein a set of heuristic tests are employed to automatically determine quantity and location of Mac Beth color checker charts.wherein the set of heuristic tests includes accepting a partition area in the flood-filled image if a color of a selected number of pixels therein is determined to be consistent with a reference color.Rejoice if you find one of those; Buffalo jars are pretty rare.They were first made in Buffalo in 1884 and for several years after. They identify the position that the mold in which the jar was made held on the glassmaking machine.