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US4813035A
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Transmultiplexer virtual group distribution frame
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US4656485A
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Four wire dual mode spiral antenna
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US4635070A
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Dual mode antenna having simultaneous operating modes
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US4498084A
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Four wire dual mode spiral antenna
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US4354193A
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Collapsible antenna support apparatus as well as a kit for and method of assembling the apparatus
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US4237551A
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Transmultiplexer
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US4131766A
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Digital filter bank
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US3579033A
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Electrostatic discharger with internal resistance element
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US3588904A
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Antenna construction with low q radiators
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US3618109A
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Antenna construction with effectively extended radiator elements
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US3553701A
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Log periodic rotating antenna
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US3504460A
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Catenary cable support system and load relief coupling construction therefor
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US3454916A
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Transformer core construction
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US3550140A
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Log periodic rotating antenna
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US3334348A
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Steerable monopole antenna system having a plurality of reflectors, said reflectors comprising a series of tubular vacuum switches
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US3449591A
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High-speed switching system
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US3416033A
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Tension link for use with electrostatically charged objects
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US3376577A
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Vertical radiation spiral antenna
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US3368319A
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Tall column structure of connected sections with warren cross-bracing and legs of channel section
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US3487312A
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Automatic transmission frequency prediction and control system
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