Warehouse & Co. Greenebaum Lot. 1229 - 1900 4-Pocket Heavy Leather Bound Trousers: Duck Stripe (No Wash)It was 150 years ago, on May 20, 1873, that Levi Strauss & Co. obtained a patent for the use of metal rivets to reinforce pockets in clothing. One year later, on August 25, 1874, Greenebaum Brothers, also based in San Francisco, obtained a patent for reinforcing stress points with leather. Until the rivet patent expired in the 1890s, Greenebaum Brothers' pants were supplied as durable workwear throughout the booming mineral mining boom, from the West