941 resultados para Electric lighting
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"Including reprints from The Statist, The Engineer, etc.
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Mode of access: Internet.
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Signed, Harry H. Schwartz, chairman, Russell Wolfe, Robert E. Stone.
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Description based on: 1896.
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Mode of access: Internet.
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Industrial arts index
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Item 429-T-11.
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"July 1994."
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"August 1995."
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Item 231-B-1.
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Mode of access: Internet.
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"Contract AT(30-1)-2789."
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An electrical discharge is used as a trap for a diffusion pump using DC-704 silicone pump fluid. The discharge cracks the pump fluid vapor thus taking it out of the system. In the process much hydrogen and some other lighter gases are evolved.
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"Issued May 1981."
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March 1980.