placed at X. The test, as experi- secured and brought into the outer air through one tical tests with the various rescuing appliances intro- ence has already shown, has proved sufficiently exact- of the windows. Because the two galleries are ar- duced to the market was arranged, in order to deter-… … Front view of the Weg apparatus. The "Aerolith" apparatus. A BESCUE TBATHTHO SCHOOL AND EXPEBIKENTAL GALLEBT FOB MINEBS.
Patents · Machine · Drum · Wire · Supplement · American supplement · Scientific American · Reinforced concrete · Model commission · Patent office · Years ago · Short arm · Iron wire · Buy machinery · Wireless telegraph
Internet Archive · Public domain (published before 1931). Free to use for anything.
