Search Results for: Radio broadcasting apparatus
supplies cameras, still and motion picture (all types) cartoon motion picture production casting directors closed captioning services commercial photo laboratories compact disc manufacturers computer software tape and disks: blank, rigid, and floppy custom photo finishing dark room rental darkroom apparatus
picture film exchange, motion picture film library, motion picture film reels film rental services film rental, for television: motion picture film studio production facilities film, sensitized motion picture, x-ray, still camera, etc. fixers, photographic (not made in chemical plants) flashlight apparatus...
https://www.smallbusinessdb.com/sic_media
supplies cameras, still and motion picture (all types) cartoon motion picture production casting directors closed captioning services commercial photo laboratories compact disc manufacturers computer software tape and disks: blank, rigid, and floppy custom photo finishing dark room rental darkroom apparatus
picture film exchange, motion picture film library, motion picture film reels film rental services film rental, for television: motion picture film studio production facilities film, sensitized motion picture, x-ray, still camera, etc. fixers, photographic (not made in chemical plants) flashlight apparatus...
https://www.smallbusinessdb.com/sic_media
july , u.s. patent improvement in electric telegraph for transmitting musical tones, issued july , u.s. patent automatic circuit-breakers for electro-harmonic telegraphs, filed jan , , issued feb , u.s. patent electro-harmonic telegraph, filed jan , , issued feb , u.s. patent telephonic telegraph apparatus
, filed jan , , issued april , u.s. patent electro-harmonic telegraph, filed jan , , issued jan , u.s. patent art of telegraphy, issued july (writing telegraph or telautograph) u.s. patent telautograph, issued july u.s. patent telautograph, issued october u.s. patent art of and apparatus for telautographic...
https://en.wikipedia.org/wiki/Elisha_Gray