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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0296558 (1981-08-26) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 3 인용 특허 : 0 |
A cartridge is made up of a plurality of packet-like members each forming a closed pocket containing a material which expands to many times its dry volume when contacted by liquid water. The packet-like members are arranged superposed on one another with the members secured together as a unit. When
A cartridge arranged to expand in the presence of liquid water comprising a plurality of packet-like members, each said packet-like member comprising a water permeable flexible cover arranged to form a closed pocket, a quantity of a dry material located in said pocket with the material being such th
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