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US2556646A
|
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Pressure indicating apparatus
|
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US2544915A
|
|
Method of making viewing tubes
|
|
US2544914A
|
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Inspection device
|
|
US2400483A
|
|
Camera
|
|
US2121014A
|
|
Visual indicator for ascertaining conditions of the circulatory system
|
|
US2066328A
|
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Handle for instruments
|
|
US2012597A
|
|
Nasal and aural speculum
|
|
US1971640A
|
|
Trap
|
|
US1908010A
|
|
Blade holder for tongue depressors
|
|
US1934698A
|
|
Mounting device for instruments
|
|
US1896861A
|
|
Illuminated telescope for instruments
|
|
US1832001A
|
|
Razor operating mechanism
|
|
US1783461A
|
|
Optical instrument
|
|
US1374984A
|
|
Retractor
|
|
US1348978A
|
|
Method for filling lamps
|
|
US1389436A
|
|
Retractor
|
|
US1388170A
|
|
Retractor
|
|
US1231702A
|
|
Illuminating attachment for retractors.
|
|
US1335935A
|
|
Adapter
|
|
US1208743A
|
|
Incandescent electric lamp.
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