拔丝地瓜做法
专利名称：Adjustable packing element asmbly
发明人：URBAN II, Larry Joph,ANDERSON, Gary L.申请号：AU2019257560
申请日：20190325
公开号：AU2019257560A1电脑为什么卡
公开日：
有效生发20201203参考文献d
专利内容由知识产权出版社提供
摘要：An adjustable packing element asmbly includes a tubular, and a packing element supported by the tubular. The packing element includes a first end portion and a cond end portion. A backup ring is arranged at the first end portion. The backup ring includes a first ction mounted to the tubular and a cond ction extending over the packing element. An expandable ring is mounted to the backup ring. The expandable ring includes a lectively expandable portion. An adjustable sleeve is mounted to the expandable ring. The adjustable sleeve is lectively arranged to constrain an amount of expansion of the lectively expandable portion.
腊排骨的做法>公章使用申请表申请人：Baker Hughes, A GE Company, LLC
代理人：Patent Attorney Services
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