DE2720700
KELCHNER JUN., RAYMOND E., LOS ANGELES, KELLER, LEON B., PALOS VERDES ESTATES
Year of Publication 18.10.1979
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Year of Publication 18.10.1979
Patent
DE2720700
KELCHNER JUN., RAYMOND E., LOS ANGELES, KELLER, LEON B., PALOS VERDES ESTATES
Year of Publication 01.03.1979
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Year of Publication 01.03.1979
Patent