Meucci files caveat for talking telegraph
Meucci files caveat for talking telegraph
Bell Patent Association formed so Sanders and Hubbard can share in proceeds from Bell's patents
Bell Patent Association formed so Sanders and Hubbard can share in proceeds from Bell's patents
Bell completes the specifications for his telephone patent application
Bell completes the specifications for his telephone patent application
Feb 14, 11:30am: Alexander Graham Bell's lawyer files his telephone patent
Feb 14, 11:30am: Alexander Graham Bell's lawyer files his telephone patent
Feb 14: Elisha Gray files telephone caveat
Feb 14: Elisha Gray files telephone caveat
Patent #174,465 for the telephone is issued to Bell
Patent #174,465 for the telephone is issued to Bell
Western Union's Orton declines to buy Bell's patent for $100k
Western Union's Orton declines to buy Bell's patent for $100k
Thomas Edison patents his carbon button transmitter
Thomas Edison patents his carbon button transmitter
Berliner files caveat for improved telephone transmitter
Berliner files caveat for improved telephone transmitter
Bell patents transfers 75% of his Canadian patent rights to his father
Bell patents transfers 75% of his Canadian patent rights to his father
Blake invents and patents his carbon microphone transmitter
Blake invents and patents his carbon microphone transmitter
Bell sues Western Union for patent infringement
Bell sues Western Union for patent infringement
Bell wins its patent lawsuit against Western Union
Bell wins its patent lawsuit against Western Union
Bell acquires Edison's carbon microphone patents from Western Union
Bell acquires Edison's carbon microphone patents from Western Union
British government rules for Bell against Edison
British government rules for Bell against Edison
Woods patents improved telephone transmitter
Woods patents improved telephone transmitter
Supreme Court upholds Bell's patent
Supreme Court upholds Bell's patent
Gray patents the coin-operated payphone mechanism
Gray patents the coin-operated payphone mechanism
Strowger forms Automatic Electric Company, receives switch patent
Strowger forms Automatic Electric Company, receives switch patent
Bell's patent expires; independent telephone movement begins
Bell's patent expires; independent telephone movement begins
Pupin loading coils patented
Pupin loading coils patented
Sallie Mead becomes first woman to hold a patent at AT&T
Sallie Mead becomes first woman to hold a patent at AT&T
Hedy Lamarr patents Secret Communications System
Hedy Lamarr patents Secret Communications System
Joel patents cellular call handoff
Joel patents cellular call handoff
