72133956
Dec 13, 1961
Jan 1, 1963
FASTENING SYSTEM IN WHICH SPECIFIC FASTENER ELEMENTS KNOWN AS LOCKBOLTS AND BLIND RIVETS ARE APPLIED TO THE ELEMENTS BEING SECURED TOGETHER BY MEANS OF SPECIAL FASTENING MEANS WHICH ARE IN THE FORM OF HAND, AIR, OR PNEUMATICALLY OPERATED PULL GUNS IN WHICH THE SOURCE OF POWER MAY BE EITHER FROM A CENTRAL POWER SOURCE OR PORTABLE POWER SOURCES
Yarns and Threads