Invention Grant
- Patent Title: Grommet valve means
- Patent Title (中): 螺旋阀装置
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Application No.: US29223452Application Date: 1952-06-07
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Publication No.: US2708451APublication Date: 1955-05-17
- Inventor: ROCKWELL EDWARD A
- Applicant: ROCKWELL EDWARD A
- Assignee: Edward A Rockwell
- Current Assignee: Edward A Rockwell
- Priority: US29223452 1952-06-07
- Main IPC: B60T13/24
- IPC: B60T13/24
Public/Granted literature
- USD523267S1 Trash bag dispenser Public/Granted day:2006-06-20
Information query
