On March 17, 1845, Stephen Perry (a British inventor and businessman) received a patent for the first rubber band. Rubber band has been holding things…
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…
Critical Features disclosed in this patent 1. Related to the patents of Tesla and Charles F. Peck, numbers: US381968 and US382280; 2. Ordinary forms of…
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