Slide lock for concrete road forms
United States Patent 3034613
US Patent References:
Road form
- - 1690295

Pneumatic joint
- - 2750014

Toggle type holding device
- - 2844234

Panel joints and panel joining devices
- - 2888112


Inventors:
Heltzel, Robert E.
Publication Date:
05/15/1962
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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