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JOSEPH WEIDENHOFF Inc

JOSEPH WEI
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2673957A Shunt for low-voltage circuit testers Expired / Lapsed 1951-07-06 1954-03-30 0 Details
US2136924A Lighting neon tubes Expired / Lapsed 1934-09-24 1938-11-15 0 Details
US2062174A Electron discharge oscillograph Expired / Lapsed 1935-03-14 1936-11-24 0 Details