IMPROVED SPRING HINGE. LANE'S SPRING HINGE. NEW MECHANICAL MOVEMENT. NEW GLOVE FASTENER. SCHRAMLING'S GLOVE FASTENER. MECHANICAL INVENTIONS. HARRIS' MECHANICAL MOVEMENT. 4 I 0 Preservation of India-rubber Tubing under Water. A Stray Balloon. _, scientific american, 1881-07-23
Keywords:
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