(under subclass 139) Spring device in which the spring element comprises a body of elastomeric material; i.e., a product of latex or a synthetic substitute or equivalent of latex.
SEE OR SEARCH THIS CLASS, SUBCLASS:
153, for a spring device of general utility, including a spring element of rubber; and see the search notes thereof.
SEE OR SEARCH CLASS
293, Vehicle Fenders,
136, for the combination of a bumper and an elastomeric support therefor.