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Title:
Slide lock for concrete road forms
United States Patent 3034613
Inventors:
Heltzel, Robert E.
Publication Date:
05/15/1962
Export Citation:
Click for automatic bibliography generation
Assignee:
Heltzel, Robert E.
Primary Class:
403/22
Other Classes:
249/208, 425/DIG.107
International Classes:
E01C19/50
;
E01C19/00
View Patent Images:
Download PDF 3034613
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US Patent References:
2888112
Panel joints and panel joining devices
2844234
Toggle type holding device
2750014
Pneumatic joint
1690295
Road form