Patent Explorer

Browse, filter, and analyze 1 patents across global jurisdictions.

📥 Export to Excel (.xlsx) + Ingest New Patent
Patent Number Title Assignee Status Filing Date Grant Date Expires Remaining Claims Actions
US2443004A Slit lens for sound reproduction apparatus Helene Curtis Industries Inc Expired / Lapsed 1946-03-22 1948-06-08 1966-03-22 0.0 yrs 0