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== Patents == [[File:Table of Pneumaticks, Cyclopaedia, Volume 2.jpg|thumb|right|upright|Table of Pneumaticks, 1728 ''Cyclopaedia'']] * {{Ref patent|country=US|number=2194624|invent1=G. A. Titterington, Jr|title=Diaphragm pressure gauge having temperature compensating means|gdate=1940-03-26|assign1=Bendix Aviat Corp}} * {{US patent|2472735}}: C. J. Ulrich: "''Barometric instrument''" * {{US patent|2691305}}: H. J. Frank: "''Barometric altimeter''" * {{US patent|3273398}}: D. C. W. T. Sharp: "''Aneroid barometer''" * {{US patent|3397578}}: H. A. Klumb: "''Motion amplifying mechanism for pressure responsive instrument movement''" * {{US patent|3643510}}: F. Lissau: "''Fluid displacement pressure gauges''" * {{US patent|4106342}}: O. S. Sormunen: "''Pressure measuring instrument''" * {{US patent|4238958}}: H. Dostmann: "''Barometer''" * {{US patent|4327583}}: T. Fijimoto: "''Weather forecasting device''"
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