|
US2401350A
|
|
Recording apparatus
|
|
US2393638A
|
|
Method and means for recording indications
|
|
US2278406A
|
|
Striker-actuating mechanism for audible signals
|
|
US2239035A
|
|
Electrical signal device
|
|
US2024722A
|
|
Automatic ignition-boosting device
|
|
US2063003A
|
|
Signal device
|
|
US2064735A
|
|
Signal device
|
|
US1914109A
|
|
Electric terminal connecter
|
|
US2043793A
|
|
Electric lighting apparatus
|
|
US1981903A
|
|
Luminescent gas lighting apparatus
|
|
US1838051A
|
|
Electric connecter
|
|
US1862503A
|
|
Gas tube transformer and socket
|
|
US1905215A
|
|
Telephone system and apparatus
|
|
US1818788A
|
|
Telephone apparatus
|
|
US2038506A
|
|
Ground light
|
|
US1813887A
|
|
Telephone
|
|
US1857107A
|
|
Apartment house telephone
|
|
US1934964A
|
|
Measuring instrument
|
|
US1994882A
|
|
Electric connecter
|
|
DE520111C
|
|
Cable clamp, especially for spark plugs
|
