71478301
Jan 5, 1945
Oct 16, 1945
STAMPED SHEET METAL FASTENERS ADAPTED TO BE USED IN LIEU OF NUTS AND WASHERS HAVING ANCHORING BASE FLANGES FORMED IN VARIOUS SHAPES, AND A TUBULAR THREADED BUSHING FOR ENGAGEMENT WITH THREADED SCREWS, VARIOUSLY APPLIED TO ARTICLES OF MANUFACTURE IN THE INDUSTRIAL ARTS
Firearms