73008768
Dec 13, 1973
Jun 17, 1975
HAZARD WARNING DEVICES-NAMELY, PLASTICIZED WARNING REFLECTORS OF THE TYPE WHICH INCLUDE BOTH DAY AND NIGHT TIME REFLECTIVE SURFACES AND PROVIDED WITH SUPPORT MEANS FOR ERECTION UPON A SUPPORT SURFACE TO WARN VEHICULAR TRAFFIC AS TO AN ONCOMING HAZARD
Electrical and Scientific Apparatus