Patent Information Publication number: US2524035 A Patent Title: Three-electrode circuit element utilizing semiconductive materials Publication type: Grant Publication date: Oct 3, 1950 Filing date: Jun…
Patent Information Publication number: US821393 A Patent Title: Flying-machine Publication type: Grant Publication date: May 22, 1906 Filing date: Mar 23, 1903 Priority date:…
Patent Information Publication number: US223898 A Patent Title: Electric lamp Publication type: Grant Publication date: Jan 27, 1880 Filing date: Nov 4, 1879 Priority…
Patent Information Publication number: US200521 A Patent Title: Improvement in phonograph or speaking machines Publication type: Grant Publication date: Feb 19, 1878 Filing date:…
