Invention Grant
- Patent Title: Boundary marker
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Application No.: US62353945Application Date: 1945-10-20
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Publication No.: US2610502APublication Date: 1952-09-16
- Inventor: CARLSON AXEL S
- Applicant: CARLSON AXEL S
- Assignee: Axel S Carlson
- Current Assignee: Axel S Carlson
- Priority: US62353945 1945-10-20
- Main IPC: E01F9/646
- IPC: E01F9/646 ; E04H13/00 ; G01C15/06
Information query
