1871 – Andrew S. Hallidie received a patent for an “endless wire rope way” which he would put into practice as the cable car system in San Francisco, California.
1882 – Thomas Edison received a patent for adding a carbon microphone to the telephone. The patent described finely divided conducting material, like carbon, between metal cups mounted on arms that attached to the mouthpiece diaphragm.
1928 – Anatol M. Josepho received a the first US patent for a fully automatic photographic film developing machine. The Photomaton better known as a PhotoBooth in the US still survives as an app and in dark corners of subway stations.
1949 – The first synchrotron installed at the Radiation Laboratory at the University of California, Berkeley, reached its design energy of 300 MeV.
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