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JENNESS A ALDER

JENNESS A
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2060009A Acoustic testing apparatus Expired / Lapsed 1932-03-09 1936-11-10 0 Details
US2043983A Apparatus for determining amplitude of sound Expired / Lapsed 1931-10-22 1936-06-16 0 Details