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Automatically deployable and retractable chock systems being parts of machines; trailer restraining systems, namely, automatically deployable wheel chock; vehicle restraining systems, namely, automatically deployable wheel chock; wheel chock deploying and retracting machines; machines, namely, automatically deployable wheel chock systems; machines for use in the trucking industry, namely, automatically deployable wheel chock units mounted to trailers; machines for use in the automotive industry, namely, onboard, integrated, automatically deployable wheel chock machines

Rubber wheel chocks; electronic wheel chock systems having wheel chock made primarily of rubber