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Easily access free patent information, as well as additional paid-for information, in the ultimate patent data dashboard by searching by the patent number! This is a patent for a: PWM controller with dual-edge modulation using dual rampsPatent for a dental handpiece
Patent number 3,902,248 patented the invention for a new dental handpiece. This patent was published in 1975. Other patents that are similar to this invention can be found in free online patent databases.Earthquakes won't be the same!
This building structure is shaped like a dome to prevent any harm from an earthquake