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