Stands for handheld digital electronic devices, namely, smart phones and tablet computers; Stands for personal digital electronic devices, namely, smart phones and tablet computers

Semiconductor wafer gauge structures having known dimensional properties to be used in place of semiconductor wafers for the purpose of calibrating semiconductor wafer non-contact dimensional measurement devices

semiconductor wafer gauge structures having know dimensional properties to be used in place of semiconductor wafers for the purpose of calibrating semiconductor wafer non-contact dimensional measurement devices

film thickness reference standards for calibration of film thickness measurement instruments