Invention Grant
- Patent Title: Check valve
- Patent Title (中): 止回阀
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Application No.: US907642Application Date: 1992-07-02
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Publication No.: US5209264APublication Date: 1993-05-11
- Inventor: Yoshihiro Koyanagi
- Applicant: Yoshihiro Koyanagi
- Assignee: Yoshihiro Koyanagi
- Current Assignee: Yoshihiro Koyanagi
- Priority: JPX3-060652 19910705
- Main IPC: B65D33/01
- IPC: B65D33/01 ; F16K15/14 ; F16K15/20 ; F16K51/00
Abstract:
A check valve for bags containing goods such as rice or other grains or foods. The valve is used to discharge excessive air from the bag while preventing outside air from entering the bag. The check valve is constructed of plural plastic films joined together.
Public/Granted literature
- US5875136A Repairable memory module and method of repairing memory modules Public/Granted day:1999-02-23
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