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SPRAGUE SPECIALTIES Co

SPRAGUE SP
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2249091A Process for the manufacture of electrolytic devices Expired / Lapsed 1937-06-15 1941-07-15 0 Details
US2011442A Discharge tube filter Expired / Lapsed 1930-12-01 1935-08-13 0 Details
US1969630A Electrolytic condenser Expired / Lapsed 1933-02-09 1934-08-07 0 Details