Prior art consists of documentary evidence related to the claimed invention which evidence existed at least a year prior to the priority date of the application. Below are listed four basic types of prior art that you may post. It is also helpful to identify individuals who are knowledgeable on the subject matter, as they may be able to help identify further prior art. Finally, you can also simply add a comment, if that is your preference. Publications Published Prior to May 15, 1991 This patent application claims priority to May 15, 1992, resulting in an earliest date of invention of May 15, 1991. While it is possible that the invention did not occur until after May 15, 1991, finding relevant prior art that published before that date assures it application. Publications can include any form of printed or electronic publication that discusses one or more elements of the claim of the patent. Products On Sale, Offered for Sale or Publicly Used Prior to May 15, 1991 This patent application claims priority to May 15, 1992, resulting in an earliest date of invention of May 15, 1991. While it is possible that the invention did not occur until after May 15, 1991, finding relevant prior art before that date assures it application. Such prior art may include products embodying the invention that were sold, offered for sale, or publicly used by the patent holder, an inventor, or any third party prior to May 15, 1991. Information that this Process was Public Knowledge or Publicy used Prior to May 15, 1991 This patent application claims priority to May 15, 1992, resulting in an earliest date of invention of May 15, 1991. While it is possible that the invention did not occur until after May 15, 1991, finding relevant prior art before that date assures it application. Such prior art may include processes embodying the invention that were in the public domain or publicly used by the patent holder, an inventor, or any third party prior to May 15, 1991. Patents and Published Patent Applications Filed in the U.S. Prior to May 15, 1991 This patent application claims priority to May 15, 1992, resulting in an earliest date of invention of May 15, 1991. While it is possible that the invention did not occur until after May 15, 1991, finding relevant prior art before that date assures it application. Such prior art may include patents issued before May 15, 1991, and/or published patent applications that were filed in the U.S. prior to May 15, 1991. Knowledgeable Persons Often times one of the best means of identifying prior art is to contact persons involved with the development of this invention or persons involved with the development of inventions cited as prior art in the patent application (click on Read the Patent, find the Citations section of patents and other prior art, click on one of those items, and find the named inventor or author). Comments If you do not have prior art or a knowledgeable person to add, but you want to comment, click on the View Comments button below. You will see all of the comments posted to date, and you can add your own comment by scrolling to the bottom of the Comments and entering the information in the boxes provided.