US2056134A
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Bread slicing machine
|
US1870574A
|
|
Valve for tire inflators
|
US1666419A
|
|
Piston-pressure gauge
|
US1597076A
|
|
Indicating or measuring device and system
|
US1526711A
|
|
Game apparatus
|
US1185522A
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|
Telephone-exchange system.
|
US1186484A
|
|
Pay-station telephone system.
|
US909383A
|
|
Electrical-impulse-transmitting device.
|
US1137200A
|
|
Common-battery automatic telephone system.
|
US1176716A
|
|
Party-line automatic telephone system.
|
US1181092A
|
|
Common-battery rotary-connector system.
|
US1152385A
|
|
System of supervision for the apparatus of a telephone or other system.
|
US1181656A
|
|
Pole-changer.
|
US1109960A
|
|
Automatic telephone-testing system.
|
US1109650A
|
|
Telephone-exchange system.
|
US1191917A
|
|
Telephone trunking and supervisory system.
|
US1061898A
|
|
Telephone lock-out.
|
US1183832A
|
|
Automatic telephone-release.
|
US1169102A
|
|
Measured-service telephone system.
|
US1151547A
|
|
Automatic extension telephone system.
|