US4731227A
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Polymerization process and apparatus
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Efficient method and apparatus for converting solar energy to electrical energy
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Radiant energy systems, memories and thermal imaging methods and apparatus
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Automated flush system
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Ohmic contact to a substrate of insulating material having a doped semiconductive oxide providing a stepped energy gap
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Force sensor
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Ferrielectric devices
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Means for sensing electrostatic fields
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Apparatus for recording and reproducing data
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Methods and apparatus for recording and reproducing intelligence
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US2698928A
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Ferro-electric carrier, particularly tape recording and reproducing system
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Electric automatic circuit breaker with reclosing means
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US2793288A
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Apparatus for electrostatic recording and reproducing
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CA579718A
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Apparatus and method for electrostatic recording and reproducing
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CA609422A
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Apparatus for recording and reproducing data
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CA669181A
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Ferro-electric storage tape reproducer
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