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US2658131A
|
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Circular slide wire resistance element
|
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US2663069A
|
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Method of making incandescent cathodes
|
|
US2669008A
|
|
Method of manufacturing tungsten articles of predetermined shape and dimensions
|
|
US2615136A
|
|
X-ray single crystal goniometer
|
|
US2619600A
|
|
X-ray spectrometry
|
|
US2570820A
|
|
X-ray cone assembly
|
|
US2625661A
|
|
Electrical apparatus
|
|
US2650307A
|
|
Infrared analyzer
|
|
US2588292A
|
|
Electron switching tubes and circuits therefor
|
|
US2547173A
|
|
Long wave length infrared radiation detector
|
|
US2663812A
|
|
X-ray tube window
|
|
US2657527A
|
|
Hot-gas engine fuel control
|
|
US2591918A
|
|
Voltage-regulated electrical power supply
|
|
US2609144A
|
|
System for recording x-ray diffraction data
|
|
US2563439A
|
|
X-ray powder camera
|
|
US2562163A
|
|
Electric discharge tube
|
|
US2557186A
|
|
Electronic trigger circuit pulse scaling system
|
|
US2638783A
|
|
Relative humidity measuring apparatus
|
|
US2509758A
|
|
Electrical condenser
|
|
US2600473A
|
|
Magnetic core
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