There is no rigid rule on the numbers of figures needed. It depends on what and how you wish to convey your idea or invention to the respective patent office. Any number that can explain your idea completely is more than enough. However, as a general rule, it is advisable to include as many “views” as possible needed to describe the independent claims (and the elements disclosed) of the patent.
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The Patent Drawings Company (TPDC) is an effective and efficient addition to my patent practice. TPDC provides quick and accurate drawings at a cost that cannot be beat!
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Draftsmen at TPDC are highly experienced, trustworthy, and great at drawing patent figures. Every-time, TPDC has delivered me very clear & accurate patent figures. I needed a quick but complex patent drawings requirement in a short time frame, and Team provided quick turn around and excellent design figures to me.
US Law Firm
The Patent Drawings Company is the best provider of drawings that I have worked with. Very professional, quick and efficient. Never any questions from the USPTO relating to patent drawings from the Patent Drawings Company.