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US1844508A
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Scanning apparatus and method
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US1897481A
|
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Electric transmission of visual representations
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US1859828A
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Electrooptical system and method of scanning
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US1828867A
|
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Scanning device
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US1740654A
|
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Contact scanning disk
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US1785262A
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Duplex scanning disk
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US1740354A
|
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Split switching gear
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US1907116A
|
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Friction drive
|
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US1756291A
|
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Cell persistence transmitter
|
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US1931658A
|
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Incandescent anode lamp
|
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US1730976A
|
|
Helical drum scanner
|
|
US1879688A
|
|
Multiple spot lamp
|
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US1747839A
|
|
Synchronizer release
|
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US1763358A
|
|
Code transmitter receiver
|
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US1763357A
|
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Arc-lamp lens-disk transmitter
|
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US1879687A
|
|
Resistance cell-circuit
|
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US1835054A
|
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Pen-box ink-feed
|
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US1837776A
|
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Collapsible shutter for projectors
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US1740353A
|
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Weather-map pen box
|
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US1739312A
|
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Spot illumination of lens cells
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