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Patent US 3187118A: Difference between revisions
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|Grant date=1965-06-01 | |Grant date=1965-06-01 | ||
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See e.g. [[11B2]], [[1A5]] and many others. | |||
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|Grant date=1965-06-01 | |Grant date=1965-06-01 | ||
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See e.g. [[11B2]], [[1A5]] and many others. | |||