| 摘要 |
<p>545,039. Road studs. GOWSHALL, Ltd., and GOWSHALL, B., May 13, 1941, No. 6173. [Class 87 (i)] [Also in Group XVIII] A road stud for traffic guides &c. comprises a metal box a with overhanging flanges g to hold in place a hollow rubber block b filled with air or gas at atmospheric or higher pressure. The block has a convex upper surface which is formed with grooves e, f at right angles to each other, and lightreflecting signals dare mounted in the sides of the grooves e.</p> |
