The “Imbertson inflatable gate” was an inflatable rubber dam patented by Norman Imbertson. Norman Imbertson worked at the Los Angeles Department of Water and Power…
This invention saved time required to achieve justification of typewritten material. On March 15, 1951, Pierre Leglise filed a patent for an apparatus for justifying…
On February 28, 1956, Jay Forrester was awarded a patent for his coincident current magnetic core memory. Forrester’s invention became the standard memory device for…
Within a two-week period in August 1897, Felix Hoffmann synthesized two drugs: aspirin, one of the most widely beneficial drugs ever, and heroin, one of…
On February 25, 1902 John Holland (an Irish engineer) was granted a patent for a submarine. Holland developed the first submarine to be formally commissioned…
On Februay 24, 1931, Parker Pen patented desk sets for supporting fountain pens. Pen receptable used to be a standard feature of all work desks.…
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