Drilldown: Patents
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None (42) ·
Louis Constantin (4) ·
Leonardo Torres Quevedo (4) ·
Charles Denniston Burney (3) ·
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Jose Pesaña y Piñol (2) ·
Cosimo Canovetti (2) ·
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Louis Brennan (2) ·
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Showing below up to 138 results in range #1 to #138.