Title:
Vertical deviation detector for roadways and roadway forms
Document Type and Number:
United States Patent 3037294

Inventors:
Graff, Peter DE.
Publication Date:
06/05/1962
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Assignee:
VIKING MFG COMPANY
Primary Class:
33/523
International Classes:
E01C23/01; G01C9/00; E01C23/00
US Patent References:
1488372Telltale compass
1633841Device for detecting and measuring the unevenness of a surface
2045563Surface gauge and marker
2047327Level-indicating device
2175496Road testing machine
2344216Roadway recording apparatus


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