Drilldown: Patents

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Patents > Year filed: 1906 & National tech categories : USPC 244/45R or None

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John Law Garsed (5) · Alphonse Papin (2) · Alfred Maul (2) · Josef Deixler (2)
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None (13) · John Law Garsed (5) · Alfred Julius Boult (2) · Alphonse Papin (2)
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