US PATENT SUBCLASS 152 / 901 TREAD PATTERN HAVING NO BLOCKS AND HAVING CIRCUMFERENTIAL RIBS DEFINED BY LINEAR CIRCUMFERENTIAL GROOVES HAVING STRAIGHT EDGES
Current as of: June, 1999
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TREAD PATTERN HAVING NO BLOCKS AND HAVING CIRCUMFERENTIALRIBS DEFINED BY LINEAR CIRCUMFERENTIAL GROOVES HAVINGSTRAIGHT EDGES:
(under the class definition) Anti-skid devices containing tread patterns having circumferential ribs with no blocks enhanced by linear circumferential grooves with straight edges.
(1) Note. The tire tread pattern found in this subclass contain ribs that are straight only.
