Public telephone service

Agnello, F. | Engineering Index Backfile | 1910

Automatic telephone installations in Italian public telephone service

Pirani, U. | Engineering Index Backfile | 1942

Highway mobile telephone service

Bonneville, S. / McDonald, D.J. | Engineering Index Backfile | 1948

Telephone dispatching in city service

Strong, Elmer E. | Engineering Index Backfile | 1915

Resale of telephone service prohibited

Engineering Index Backfile | 1930