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1887–1916 1916–1926 1926–1964 1964–1983 1966–19??
1887–1916 1916–1926 1926–1964 1964–1983 1966–19??
1983–1994 1994–2003 2003–2016 2016–2019 2019–present
1983–1994 1994–2003 2003–2016 2016–2019 2019–present

Società Idroelettrica Pont Saint Martin[]

1887–1916[]

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The company was founded as Società Idroelettrica Pont Saint Martin.

Società Idroelettrica Piemontese[]

1916–1926[]

SIP Italy 1920s
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In 1916 Società Idroelettrica Pont Saint Martin became Società Idroelettrica Piemontese (SIP).

1926–1964[]

SIP Italy 1926
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Società Italiana per l'Esercizio Telefonico[]

1964–1983[]

SIP 1964

In 1964 Società Idroelettrica Piemontese (SIP) was merged with Società Telefonica Interregionale Piemontese e Lombarda (STIPEL), Società Telefonica delle Venezie (TELVE), Telefoni Italia Media Orientale (TIMO), Società Telefonica Tirrena (TETI) and Società Esercizi Telefonici (SET) as Società Italiana per l'Esercizio Telefonico (SIP).

1966–19??[]

SIP Italy 1966
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1983–1994[]

Logo sip
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Telecom Italia[]

1994–2003[]

Telecom Italia old

2003–2016[]

Telecom Italia

The number of waves was reduced from four to three.

In 2015 Telecom Italia's network operations were merged into the TIM brand.

2016–2019[]

Telecom Italia 2016

Gruppo TIM[]

2019–present[]

Gruppo TIM


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