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To supplement another answer - You mention a "main mechanism". A critical point before drafting a patent application is to determine what you think that the invention is. If you have invented a new carburetor you do not need to show a whole car and you might discuss variations of the carburetor that make it suitable for a lawnmower. An invention ...


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I'm not an attorney, but generally you submit drawings that illustrate just the specific mechanism involved in the invention with enough context to explain how it works. Ordinary elements like motors and gears can be illustrated generically. You can get a pretty good idea of what patent drawings look for by looking at other patents. You can use Google ...


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No, they are not required to be unique. For examples try any standard product in any patent search engine and you'll find plenty.


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The detailed description doesn't need to be particularly detailed however I have seen a case where a filing date was retracted on a provisional application (that would remove the ability to use the patent pending marking) because the only text was headed "Summary" and there wasn't much of it.


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In Australia all you need to file a provisional patent application is a title, an inventor name and a description of the invention. You don't even need claims. But the problem with doing that is some countries require claims to be part of a provisional patent application for the purposes of deriving priority. Thus you would be very brave to file it without ...


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