CH11796A
(en )
1896-08-15
Call counters for telephone sets
CH13275A
(en )
1897-06-15
Counter for telephone calls
CH12271A
(en )
1896-11-30
Circuit arrangement for telephone exchanges
CH9057A
(en )
1895-03-15
Call counters for telephone systems
CH11707A
(en )
1896-07-31
Lebet telephone conversation counter
CH209E
(en )
1896-12-15
Lebet telephone conversation counter
CH10683A
(en )
1896-01-31
Improved membrane for telephones
AT23494B
(en )
1906-03-26
Call counters for telephone exchanges.
CH14046A
(en )
1897-09-30
Switching device for common telephone lines
CH13748A
(en )
1897-08-15
Telephone call time counter with separate registration devices for the various call charges
CH13839A
(en )
1897-09-15
Cord for telephone exchanges
CH18739A
(en )
1900-02-28
Ringer for telephone central switch
CH10104A
(en )
1895-10-15
Blackboard for telephone traffic
CH9645A
(en )
1895-07-31
Telephone communications counter
GB189614500A
(en )
1896-08-22
An Improved Call Counter suitable for Telephone Exchanges.
CH14118A
(en )
1897-10-15
Change flap for telephone exchanges
CH12122A
(en )
1896-10-15
Telephone transmitter
CH15246A
(en )
1898-04-30
telephone
CH14047A
(en )
1897-09-30
Long distance telephone timer
CH13655A
(en )
1897-08-15
Sophisticated telephone system
CH26328A
(en )
1903-08-15
Telephone line for telephone central offices
CH35512A
(en )
1906-09-15
Central office switch for telephone systems
CH11794A
(en )
1896-08-15
Automatically switching carrier for telephone ear cups
CH16232A
(en )
1898-10-15
Improved Telephone
ES19141A1
(en )
1896-08-01
Mobile phone.