Title:
Pyramidal highway marker with resilient walls
United States Patent 2483734
US Patent References:
/0810395.html
- - 0810395

Highway marker
- - 2095609

Safety marker
- - 2333273


Inventors:
Neal, Harry E.
Publication Date:
10/04/1949
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Assignee:
PLASTIC ENGINEERING INC
Primary Class:
116/63R
Other Classes:
116/63C, D10/109, 116/209, 116/63P
International Classes:
E01F9/012; E01F9/011