US2669389A
(en )
1954-02-16
Boxing scoreboard
SE185770C1
(no )
1963-01-01
US2239524A
(en )
1941-04-22
Recording apparatus
US3163926A
(en )
1965-01-05
Cable harness production apparatus
US2095730A
(en )
1937-10-12
Stock quotation system
US1676742A
(en )
1928-07-10
Traffic-recording equipment for telephone systems
US2182875A
(en )
1939-12-12
Totalizing system
US2962659A
(en )
1960-11-29
Method for finding faults in a plurality of conductors
US3848230A
(en )
1974-11-12
Information transmission system
US2895121A
(en )
1959-07-14
Read-out apparatus for movable indicating mechanisms
US3061182A
(en )
1962-10-30
Tape perforator for type composing machines
US1969978A
(en )
1934-08-14
Code setting device for signal systems
US1986972A
(en )
1935-01-08
Selecting system
NO122245B
(no )
1971-06-07
US1945470A
(en )
1934-01-30
Signal transmitting apparatus
US1852994A
(en )
1932-04-05
Signaling apparatus and method
US3478173A
(en )
1969-11-11
Electronically controlled telecommunication system
US1803614A
(en )
1931-05-05
Remote control system
US2981395A
(en )
1961-04-25
Operator mechanism for the control of the automatic operation of a series of successive individually selected operational steps in business, calculating and similar machines
US2225410A
(en )
1940-12-17
Computing system
US1960781A
(en )
1934-05-29
Selecting system
ES440067A1
(es )
1977-02-16
Un sistema de radiodifusion por cable perfeccionado.
US2392355A
(en )
1946-01-08
Indicating system
US2353046A
(en )
1944-07-04
Card punching machine
US1681215A
(en )
1928-08-21
X t telephone-exchange system