|
US1488227A
|
|
Method and apparatus for applying belt hooks
|
|
US1468456A
|
|
Thermoelectric couple
|
|
US1490764A
|
|
Electric reproducing apparatus for phonographs
|
|
US1396402A
|
|
Sound-selecting apparatus
|
|
US1452063A
|
|
Art of synchronous operation of entertainment apparatus
|
|
US1380864A
|
|
Method of recording sound
|
|
US1431626A
|
|
Measuring instrument
|
|
US1263308A
|
|
Measuring apparatus.
|
|
US1003229A
|
|
Differential-pressure gage.
|
|
US1000149A
|
|
Belt-fastener.
|
|
US1000148A
|
|
Speed-recorder.
|
|
US1000147A
|
|
Combined clock and shock-recorder.
|
|
US1004356A
|
|
Belt-fastener.
|
|
US1000892A
|
|
Pressure indicating and recording apparatus.
|
|
US1000146A
|
|
Temperature-compensating device.
|
|
US939209A
|
|
Speed indicating or recording device.
|
|
US885430A
|
|
Thermo-electric couple.
|
|
US880272A
|
|
Thermo-electrical system.
|
|
US880273A
|
|
Indicating and recording system.
|
|
US839983A
|
|
Electric furnace.
|
