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Degradable agricultural mulch sheeting
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Diazotype composition stabilization
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Method of preparing matte finish color-proofing surprints
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Color-proofing method
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Photographic processing apparatus with liquid application to both sides of the photographic material
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Precise linear actuator
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Photogrammetric measuring system
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Light modulator employing electrooptic crystals
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ECG Amplifier overload control
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DC Shift error correction for electro-optical measuring system
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Theodolite center mounting means
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Theodolite leveling means
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Telescope level adjusting means
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Two-speed telescope focusing mechanism
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Electronic surveying system
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Digital level indicator
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Zero index for electro-optical measuring device
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Electrolytically induced polymerization utilizing bisulfite adduct free radical precursor
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Theodolite adjusting means
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