In 1891, American Almon B. Strowger patented the first automatic switchboard
what you say
1. private branch exchange 2. private manual branch exchange 3. private automatic branch exchange 4. computerized branch exchange 5. automatic call distribution 6. auto attendant switchboard 7. centrex
American Almon B. Strowger patented the first automatic switchboard
1. private branch exchange 2. private manual branch exchange 3. private automatic branch exchange 4. computerized branch exchange 5. automatic call distribution 6. auto attendant switchboard 7. centrex
Eric Chester invented the automatic loom he is a great man
George Westinghouse invented the automatic air brake in 1869
Richad SpikesThe person who invented the first automatic car wash is not known
Employer's Main Switchboard*
the first automatic transmission was invented by Louis-Rene Panhard and Emile Levassor in 1894
Employer's Main Switchboard*
1872
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