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MRI — The Imaging Machine That Detects Cancer Without Radiation

Raymond Damadian's 1974 patent describes using nuclear magnetic resonance to distinguish cancerous tissue from healthy tissue — the foundational discovery that launched MRI scanning, though Damadian controversially did not share the Nobel Prize.

How to Buy and Download Digital Music or Movies Over a Phone Line

This 1993 patent describes a system for a customer to pay for and download digital audio or video files from a remote server to their own storage device using a phone line.

The Battery Cathode That Powers Every Electric Vehicle and Smartphone

This patent covers the lithium cobalt oxide cathode — the Nobel Prize–winning invention that made rechargeable lithium-ion batteries practical, enabling EVs, laptops, and smartphones.

Hedy Lamarr's Secret Radio System for Torpedo Guidance

Hedy Lamarr and George Antheil's 1942 patent describes a secret communication system that rapidly changes radio frequencies to prevent enemies from jamming or eavesdropping on torpedo guidance signals.

Edison's First Practical Electric Light Bulb

Thomas Edison's 1880 patent for an electric lamp described the first commercially viable incandescent light bulb, using a high-resistance carbonized filament in a vacuum.

The Barcode — The Lines on Every Product in Every Store

Norman Woodland and Bernard Silver's 1952 patent describes the first barcode system — a machine-readable code using lines of varying width that encodes product information, invented while Woodland was sketching in sand on a Miami beach.

How the Wright Brothers' First Flying Machine Controlled Flight

The Wright Brothers' 1906 patent describes their pioneering flying machine, which used a unique wing-warping system and rudder for controlled flight, marking a foundational step in aviation history.

Bell's 1876 Patent for Sending Voice Over Wires

Alexander Graham Bell's 1876 patent describes a method for transmitting vocal or other sounds telegraphically, laying the groundwork for the telephone.

Colorimetric immunoassay process

Tesla's AC Induction Motor: How Alternating Current Powers the World

Nikola Tesla's 1888 patent describes an electric motor that runs on alternating current (AC), eliminating the need for brushes or commutators and making long-distance electrical power transmission practical for the first time.

Artificially intelligent systems, devices, and methods for learning and/or using an avatar's circumstances for autonomous avatar operation

System and interface for electronic communication generation and tracking

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Electro-optical device and method for identifying and inducing topological states formed among interconnecting neural modules

Method and apparatus of secure authentication and electronic payment through mobile communication tool

Computer systems to inhibit unauthorized copying, unauthorized usage, and automated cracking of protected software

Graphic user interface for database system

Method for measuring D-Q impedance of polyphase power grid components