• 4,153,821 Optical scanner masking means
  [Google] [USPTO]
• 4,119,844 Phonograph cartridge and sensor assembly
  [Google] [USPTO]
• 4,117,511 Universal television interface and sync generator therefor
  [Google] [USPTO]
• 4,109,114 Programmable phonograph device
  [Google] [USPTO]
• 4,093,832 Programmable record changer
  [Google] [USPTO]
• 4,082,292 Tone arm lift mechanism
  [Google] [USPTO]
• 4,077,049 Universal television interface
  [Google] [USPTO]
• 4,034,990 Interactive television gaming system
  [Google] [USPTO]
• 3,993,861 Digital video modulation and demodulation system
  [Google] [USPTO]
• 3,991,266 Dual image television
  [Google] [USPTO]
• 3,921,161 Preprogrammed Television Gaming System
  [Google]
• RE28,598 Televison Gaming Apparatus and Method
  [Google]
• 3,829,095 Method of Employing a TV Receiver for Active Participation
  [Google]
• 3,737,566 Television Coder and Decoder
  [Google]
• 3,728,480 Television Gaming and Training Apparatus
  [Google]
• 3,659,285 Television Gaming Apparatus
  [Google]
• 3,559,221 Recording CRT Light Gun & Method
  [Google]
• 3,611,321 Memory Device and Methods and Circuits Relating Thereto
  [Google]
• 3,433,442 Parachute Dereefing System
  [Google]
• 3,629,939 Multilayer Core Memory Process
  [Google]
• 3,320,604 Indicator Announcing System
  [Google]
• 2,898,511 Sweep Generators
  [Google]
• 2,711,513 Modulating Systems
  [Google]

Ralph Baer's patents listed below can be viewed via searches on Google Patents or the United States Patents and Trademark Office (Google links are PDFs, USPTO are webpages):

• 5,737,247 Bicycle accessory with voice synthesis capability
  [Google] [USPTO]
• 5,531,600 Interactive audio-visual work
  [Google] [USPTO]
• 5,437,552 Interactive audio-visual work
  [Google] [USPTO]
• 4,875,096 Encoding of audio and digital signals in a video signal
  [Google] [USPTO]
• 4,846,693 Video based instructional and entertainment system using animated figure
  [Google] [USPTO]
• 4,786,967 Interactive video apparatus with audio and video branching
  [Google] [USPTO]
• 4,654,700 Optical decoder
  [Google] [USPTO]
• RE32,305 Method of employing a television receiver for active participation
  [Google] [USPTO]
• RE32,282 Television gaming apparatus
  [Google] [USPTO]
• 4,571,640 Video disc program branching system
  [Google] [USPTO]
• 4,567,532 Selectable view video record/playback system
  [Google] [USPTO]
• 4,540,176 Microprocessor interface device
  [Google] [USPTO]
• 4,496,158 Electro-optical sensor for color television games and training systems
  [Google] [USPTO]
• 4,395,045 Television precision target shooting apparatus and method
  [Google] [USPTO]
• 4,359,223 Interactive video playback system
  [Google] [USPTO]
• 4,357,014 Interactive game and control therefor
  [Google] [USPTO]
• 4,355,805 Manually programmable video gaming system
  [Google] [USPTO]
• 4,346,407 Apparatus for synchronization of a source of computer controlled video to another video source
  [Google] [USPTO]
• 4,342,454 Method and apparatus for instant replay and other capabilities for microprocessor-controlled video games
  [Google] [USPTO]
• 4,310,854 Television captioning system
  [Google] [USPTO]
• 4,240,638 Microprocessor controlled game apparatus
  [Google] [USPTO]
• 4,216,965 Microcomputer controlled electronic game apparatus
  [Google] [USPTO]
• 4,207,087 Microcomputer controlled game
  [Google] [USPTO]
• 4,194,198 Digital preprogrammed television game system
  [Google] [USPTO]
• 4,166,621 Programmable record changer
  [Google] [USPTO]