作者: Joyce Brenda Compton , Jill Brenda Compton
DOI:
关键词: Mining engineering 、 Engineering drawing 、 Cover (algebra) 、 Engineering
摘要: An attachable and detachable cover for a pocket having an inner area. The may include first portion disposed external to the pocket, generally conforming contour of removably secured pocket. decorative element. In addition, second within area cause be retained by Further, third connecting portion.