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Birtcher Corp

Birtcher C
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3908641A Electrocardiograph with improved stylus control circuits Expired / Lapsed 1974-06-07 1975-09-30 12 Details
US2828747A Gas-blanketed electro-surgical device Expired / Lapsed 1952-12-06 1958-04-01 0 Details