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United States Utility Patents
4,964,140 - 4,964,149

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NumberTitle
4,964,140 Digital differential signal transmission apparatus
4,964,141 Serial data processor capable of transferring data at a high speed
4,964,142 Receiver synchronization in encoder/decoder
4,964,143 EPROM element employing self-aligning process
4,964,144 Counter for electric switch device
4,964,145 System for magnification correction of conductive X-ray lithography mask substrates
4,964,146 Pattern transistor mask and method of using the same
4,964,147 Rotating anode X-ray tube comprising anodic current flow device
4,964,148 Air cooled metal ceramic x-ray tube construction
4,964,149 Fluid controlled counterbalance and power-assist for radiation imaging



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