Invention Grant
- Patent Title: Collapsible traffic button
- Patent Title (中): 可折叠交通按钮
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Application No.: US28048028Application Date: 1928-05-25
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Publication No.: US1802940APublication Date: 1931-04-28
- Inventor: CORNELIUS WESLEY F
- Applicant: CORNELIUS WESLEY F
- Assignee: Wesley F Cornelius
- Current Assignee: Wesley F Cornelius
- Priority: US28048028 1928-05-25
- Main IPC: E01F9/07
- IPC: E01F9/07
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